Pronouns, Possessives, and Modifiers — Topic practice
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Identify the decisive rule and the specific flaw in its nearest competitor. Complete the four written drills in the lesson before this practice set. Question numbers follow the shuffled order; Guide question labels match the lesson references.
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The drill
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Question 5
Guide question 4.05
Foundation
The exhibition includes four posters advertising the same theater production. Each poster uses a different illustration, but all four share the same title and performance date. ______ are printed on heavy paper so that the display can withstand frequent handling.
Which choice completes the text so that it conforms to the conventions of Standard English?
They refers to the four posters, the physical items printed on heavy paper. It is a plural subject pronoun and agrees with the verb are. The descriptions of each poster do not turn the group into a singular antecedent.
A: Its is a possessive determiner and requires a following noun; it cannot serve as the subject of are in this sentence.
C: It is singular and cannot agree with are. It would also fail to refer to the four posters as a group.
D: Their also requires a following noun, such as their illustrations. It cannot by itself supply the subject required before are.
If you missed it: Label the antecedent and the pronoun's position separately: four posters; subject of are.
In a field journal, two researchers wrote, "We designed every instrument used in this trial ourselves; no equipment belonged to anyone outside our team. Before the trial began, we checked all of ______ instruments against the same reference standard."
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
First-person possessive form before an owned noun | Review lesson 4.1
Correct choice: our
The researchers speak as we and identify their team as the owner of the instruments. Immediately before the noun instruments, the first-person plural possessive determiner is our. Ours is a possessive pronoun that can stand alone, but it cannot directly modify instruments. The blank's grammatical position therefore distinguishes the correct form even before the context is fully paraphrased.
A: Ours stands alone as a possessive pronoun, as in These instruments are ours. Before the noun instruments, use the possessive determiner our. All of ours instruments is not a grammatical noun phrase.
B: Us is an object pronoun. It does not function as the possessive determiner before instruments. All of us instruments incorrectly combines the personal object form and the noun.
C: We is a subject pronoun, not a possessive determiner. Before the noun instruments, the required first-person plural possessive form is our.
If you missed it: Distinguish the two possessive forms: our instruments, but the instruments are ours. Read the noun immediately after the blank.
The covers of a damaged manuscript had become detached, although the bound pages remained secure. A conservator repaired both covers and then reattached ______ to the manuscript using narrow strips of flexible material. The repair left the original binding intact.
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
Pronoun reference across a competing singular noun | Review lesson 4.2
Correct choice: them
The direct objects of repaired and reattached are both covers. Them is the plural object pronoun required to continue that reference. The nearby singular manuscript names the item to which the covers are reattached; it is not the object being reattached.
B: It would be singular, but the action applies to both covers. It would also risk making the manuscript the thing reattached to itself, contrary to the specified repair.
C: Its is a possessive determiner and cannot stand alone as the object of reattached.
D: They is the subject form. After the transitive verb reattached, the sentence needs the object form them.
If you missed it: Replace the blank with the actual noun phrase: reattached both covers to the manuscript. Then convert that phrase to the correct pronoun.
Of the four brackets supporting the panels on a display case, only the bracket nearest the entrance was removed for testing. The other three remained attached to the case throughout the inspection. After the removed bracket passed the test, ______ returned to its original position.
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
One selected component within several nested plural phrases | Review lesson 4.2
Correct choice: it was
The returned object is the one removed bracket. The passage carefully distinguishes it from the three brackets left in place and from the panels they support. It was supplies a singular subject and finite auxiliary, followed by the passive participle returned. Its original position confirms the continuing reference to the single bracket.
A: They were makes the returned subject plural. Only one bracket was removed and is now returned; the three other brackets remained attached and cannot be the returned group.
B: Them is an object form and cannot function as the subject of was. The intended referent is also singular rather than plural.
D: Its is possessive, not the subject-plus-verb sequence needed before returned. Insertion produces its returned to its original position, with no grammatical subject and finite passive verb.
If you missed it: Track which member of a set actually participates in the later action. Do not let plural nouns embedded in the setup override an explicitly selected singular item.
Seven children each recorded the birds they saw during a nature walk. The instructor combined all seven reports into a single class chart. The chart summarizes the ______ observations and uses a different color to identify the report submitted by each participant.
Which choice completes the text so that it conforms to the conventions of Standard English?
The observations belong to the seven children whose reports were combined. Children is already plural. Because that plural does not end in s, its possessive is children's. The final s belongs to the possessive ending; it is not a new plural ending.
A: Childrens' incorrectly treats children as though it first needed an added plural s. The plural is children, so its possessive is children's.
B: Children supplies the plural owner noun without the possessive ending required to link these particular children to their observations.
C: Childrens is neither the standard plural nor the standard possessive of child. It incorrectly adds an s and still omits the apostrophe needed for possession.
If you missed it: Form the plural before the possessive: child becomes children; children then becomes children's.
The laboratory uses exactly one spectrometer, which contains six detectors. During maintenance, an engineer inspects every detector and replaces any damaged unit. A checklist ensures that all six of the ______ receive the same inspection before the instrument is reassembled.
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
Singular owner followed by a plain plural object | Review lesson 4.3
Correct choice: spectrometer's detectors
One spectrometer is the related owner, so spectrometer's is singular possessive. Detectors names the six units receiving inspection. It is a plain plural and is the head of the subject phrase; no owned noun follows it, so no possessive apostrophe is needed on detectors.
A: Spectrometers' is a plural possessive, but the laboratory has exactly one spectrometer in the passage.
C: Detectors' makes the head noun possessive and leaves its owned item unstated. The units themselves receive inspection; the sentence needs the plain plural detectors as its subject.
D: Spectrometers is an unmarked plural rather than the possessive of the one spectrometer, while detector's is a singular possessive rather than the six detectors required by all six.
If you missed it: After choosing the owner's possessive, inspect the next noun independently. A noun naming the owned items may simply be plural.
Mira and Owen coauthored one field guide and agreed to publish it under both of their names. The library received a single copy of that jointly written book. In its catalog, the library lists ______ field guide under the subject heading "Regional Wildlife."
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
A conventional joint-ownership phrase | Review lesson 4.4
Correct choice: Mira and Owen's
Mira and Owen's identifies the field guide jointly written by the two named authors. The possessive ending on the final name applies to the coordinated owners of the single book. The names and the shared work are both preserved.
A: Owens' would be a possessive formed from a plural or differently named owner Owens. The given author is Owen, whose singular possessive is Owen's.
B: Mira's and Owen leaves Owen without the possessive marking required for this joint possessive construction. The phrase does not correctly form the possessive of the two coordinated names.
D: Miras changes the given name Mira and supplies no justified plural referent. The required coordinated owner names are Mira and Owen.
If you missed it: Identify the coordinated owners as a unit. Preserve both names and place the possessive ending correctly for the shared item.
Two architects each supervised exactly three assistants. Every assistant submitted exactly one measurement log, and all six logs were included in a review. The review confirmed that all six of the ______ logs used the same unit of length.
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
Two explicit owner counts in a nested possessive | Review lesson 4.4
Correct choice: architects' assistants'
The six logs belong to six assistants working under two architects. Both owner nouns are regular plurals ending in s, so both possessives take an apostrophe after that s: architects' assistants'. The phrase all six and the explicit one-log-per-assistant condition prevent the sentence from silently narrowing to one architect's three assistants or one assistant's single log.
B: Architect's names one architect. Each architect has only three assistants, each with one log, so a single architect's assistants cannot supply all six logs required in the tested sentence.
C: Assistant's names one assistant, but each assistant submitted exactly one log. It cannot account for the six logs required by all six.
D: Both nouns are plain plurals without the possessive endings that link the architects to the assistants and the assistants to the logs. They do not form the required ownership chain.
If you missed it: Read the chain backward and use the quantities in the same sentence: six logs, six assistants, two architects.
A restorer examined a clock ______. Because the crack did not extend into the mechanism, the restorer repaired the face without replacing the gears. The repair preserved the original numbering around the edge of the dial.
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
Whose versus who's before an owned noun | Review lesson 4.5
Correct choice: whose face was cracked
Whose is the possessive relative word linking the clock to its face. It may refer to an object as well as a person. In the relative clause, face is singular, so was agrees with it. The completed sentence describes the clock by the condition of its face.
B: Who's expands to who is or who has. Neither who is face was cracked nor who has face was cracked forms the required possessive relative clause.
C: Whos' is not a standard possessive or contraction. The possessive relative form is whose, with no apostrophe.
D: Whose correctly marks possession, but face is singular and requires was, not the plural were, in this factual past-tense clause.
If you missed it: Expand who's before accepting it. When a noun such as face immediately follows and needs an owner, consider whose.
The coordinator asked the volunteers to meet at the entrance and added, "When ______, the supervisor can match you to the names on the attendance list. Keep the tags visible throughout the tour so that visitors can identify you."
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
Three homophones with different grammatical jobs | Review lesson 4.5
Correct choice: you're wearing your name tags and standing there
You're expands to you are and supplies the subject and auxiliary for wearing and standing. Your marks the volunteers' ownership of the name tags. There refers back to the entrance, where the volunteers were asked to meet. Each form has a different job in the same clause.
A: Your at the start is possessive and cannot supply the subject-plus-auxiliary you are needed before wearing. The dependent clause after When would lack a finite predicate.
B: The second you're would expand to you are before name tags. After wearing, the sentence needs an object noun phrase: your name tags.
C: Their is a possessive determiner, so it cannot stand alone after standing to indicate a location. The location word is there.
If you missed it: Do three independent substitutions: you are wearing; your name tags; standing at the entrance.
A cartographer checked every coastline on an old map against a set of recent aerial photographs. The comparison revealed several small inaccuracies. After tracing the coastlines in both sources, ______ before preparing the corrected map for publication.
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
Active introductory modifier and a possessive distractor | Review lesson 4.6
Correct choice: the cartographer corrected the errors
The opening phrase After tracing the coastlines in both sources needs the person who did the tracing as its logical subject. The passage identifies that person as the cartographer. Choice B supplies the cartographer as the main subject and corrected as a finite verb.
A: The subject is errors, which cannot trace coastlines. The passive verb is grammatical by itself, but it does not repair the dangling introductory phrase.
C: The subject is map. A map can show coastlines, but it cannot compare sources by tracing them; the described actor is the cartographer.
D: The head of the subject is corrections, not cartographer. Naming the cartographer as a possessor does not make that person the subject performing the introductory action.
If you missed it: Reduce each candidate subject to its head: errors, cartographer, map, corrections. Only one can perform the stated tracing.
An archaeological team removed a ceramic vessel from a sealed layer of soil. The vessel was the only object recovered intact from that layer. Recovered intact from beneath several layers of compacted soil, ______ for transport to a conservation laboratory.
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
Passive introductory modifier with a complex main subject | Review lesson 4.6
Correct choice: the team's newest ceramic vessel was carefully packed
The opening phrase describes what was recovered intact, and the passage explicitly identifies that object as the vessel. In the team's newest ceramic vessel, the head noun is vessel, even though the phrase begins with a possessive reference to the team. Was carefully packed is a complete passive predicate whose subject also fits the opening modifier.
A: The head of the subject is success. Success is an outcome, not the ceramic object recovered intact from the soil.
B: The main subject is archaeologists. The passage identifies the vessel, not the people, as the object recovered intact from the sealed layer.
D: The head of the subject is age. An estimated age is not a physical object that can be recovered intact and packed for transport.
If you missed it: For a passive modifier, ask what received the action. Then look through any possessive or descriptive words to the head noun of the main subject.
An art handler found one damaged frame around a painting that was entirely intact. The damage was confined to the frame's upper edge. To prevent loose pieces of wood from falling onto the canvas, the handler removed ______ before carrying the painting into storage.
Which choice most logically completes the text?
Why this answer
A description must attach to the object with the stated property | Review lesson 4.7
Correct choice: the frame with a damaged upper edge
The phrase with a damaged upper edge must describe the frame, because the passage explicitly confines the damage to that object and says the painting is intact. Choice C attaches the description to frame and makes the frame the object removed. This is a matter of the stated relationship, not a preference about sentence rhythm.
A: With a damaged upper edge modifies painting. That assigns the damage to an object explicitly described as entirely intact.
B: Damaged modifies painting and intact modifies frame, reversing the conditions specified in the passage.
D: Intact again describes the frame, while damaged describes the painting. Both descriptions contradict the stated condition of the two objects.
If you missed it: Draw a two-item map: frame = damaged; painting = intact. Check which noun each adjective or prepositional phrase actually modifies.
The prototype lamp has no external cable; a battery inside its base is its sole source of power. During a demonstration, the lamp, ______, remained illuminated while a technician carried it from one end of the room to the other.
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
An internal passive modifier versus finite and incomplete clauses | Review lesson 4.7
Correct choice: powered by a battery concealed within its base
The main clause is the lamp remained illuminated. The inserted phrase describes the lamp as powered by a battery; concealed within its base further describes the battery. Powered by forms a passive participial modifier, so no extra finite verb is needed inside the comma pair. Both levels of description match the supplied facts.
A: Powered a battery is an additional finite predicate, not a passive participial modifier. The comma pair cannot insert that predicate into the main clause this way; it also reverses the stated power relationship.
C: The passive phrase beginning with being requires the past participle powered, not the base form power. Being power by a battery is a malformed auxiliary chain.
D: Whose begins a relative construction, but whose power from a battery concealed within its base has no finite verb to complete its clause. It cannot function as the required complete modifier here.
If you missed it: Identify the main clause, then inspect the inserted material independently. A participial phrase can be complete as a modifier even though a relative clause still needs its own finite verb.
Two engineers jointly designed a bridge and built exactly one scale model of it for an exhibition. They used balsa wood for the model and mounted it on a display board. Built from balsa wood and mounted on that board, ______ over a simulated river.
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
A passive modifier combined with number and ownership | Review lesson 4.8
Correct choice: the engineers' model represents their bridge
The object built from balsa wood and mounted on the board is the single model. Choice D makes that model the main subject, uses the plural possessive engineers' for the two engineers, and uses their to connect the bridge to the same engineers. Represents agrees with the singular subject model. The ending over a simulated river describes the modeled bridge's arrangement.
A: Models is plural, but the passage specifies exactly one model. The number of engineers does not determine the number of models.
B: Them is an object pronoun, not a possessive determiner. Before bridge, the sentence requires their to identify the engineers' bridge.
C: The main subject is calculations. Calculations are not the physical balsa-wood object mounted on the board; the introductory passive description must attach to the model.
If you missed it: Count the owners and the object independently, then verify the modifier: two engineers; one model; the model is the object built and mounted.
At a workshop, six children each drew one diagram of a flowering plant. A biologist examined all six diagrams and compared how the children represented the roots. After examining all six diagrams, ______ in a report about the activity.
Which choice completes the text so that it conforms to the conventions of Standard English?
Why this answer
Active modifier, irregular possessive, and plural reference | Review lesson 4.8
Correct choice: the biologist compared the children's depictions and recorded their differences
The biologist is the person who examined the diagrams, so that person must be the main subject after the opening phrase. Children is an irregular plural whose possessive is children's. Their refers to the multiple depictions being compared. Choice A satisfies the actor, possessive, and reference constraints simultaneously.
B: The head of the subject is comparison. An abstract comparison cannot examine diagrams; the possessive biologist's does not make the biologist the subject of the main clause.
C: Childrens' is an incorrectly formed possessive. Children is already plural and does not end in s, so the required form is children's.
D: Its is singular, but the differences being recorded are differences among the children's multiple depictions. No singular depicted item supplies the intended antecedent for its here.
If you missed it: Write three checks before choosing: biologist acts; children's owns; their refers to depictions. Reject a choice as soon as one check fails.