C1 Ellipsis & Substitution Test 2 – Advanced Academic Grammar Practice for IELTS, TOEFL & YDS
Enhance your C1 academic grammar with Ellipsis & Substitution Test 2. Practice advanced clause substitution, auxiliary ellipsis, comparative deletion, and pro-form structures with ultra-detailed explanations.
Instructions: Choose the correct option (A, B, or C).
RESULTS
#1. The first hypothesis was rejected, and the second was ______ as well.
#2. Some critics questioned the validity of the data, and others did ______ too.
#3. The revised model is more efficient than the previous ______.
#4. The initial results were not as reliable as expected they would ______.
#5. If necessary, the methodology can be adjusted, and it often is ______.
#6. The first solution proved effective; the alternative did not ______.
#7. The author assumed the theory was flawed, but few reviewers believed ______.
#8. Several participants objected to the proposal, and a number of others did ______.
#9. The updated framework is less adaptable than the original ______.
#10. The findings were more significant than we anticipated they would ______.
#11. Some variables were controlled carefully, but not all ______.
#12. The preliminary analysis seemed convincing, but later evidence showed it was not ______.
#13. The committee approved the revised draft, but not the earlier ______.
#14. The researcher predicted the outcome would be controversial, and it proved to be ______.
#15. The new strategy appears more sustainable than the previous approach was thought to ______.
Detailed Explanations
(All explanations are gathered here. In each explanation, the correct answer is shown as a single word only.)
1. so
“So” substitutes for the entire passive verb phrase “rejected.” Instead of repeating the verb, substitution creates cohesion. This is verbal substitution in passive context, a common academic reduction strategy.
2. so
“Did so” replaces the verb phrase “questioned the validity of the data.” So functions as a pro-form representing the entire action. At C1 level, learners must distinguish verbal substitution from demonstrative reference.
3. one
“One” substitutes for a singular countable noun previously mentioned (“model”). It refers to a different item of the same type, not the identical object. This prevents lexical repetition.
4. be
After “would,” ellipsis removes repeated complement information. The full clause would be “would be reliable.” Be completes the structure while omitting predictable repetition.
5. so
“Is so” substitutes for “adjusted.” So replaces the passive verb phrase. This structure increases concision and maintains textual cohesion.
6. so
“Did not so” substitutes for “prove effective.” So replaces the predicate. This pattern is formal and often found in analytical comparisons.
7. that
“That” substitutes for the clause “the theory was flawed.” It functions as a clause substitute rather than a relative pronoun. This avoids repeating a full complement clause.
8. so
“Did so” replaces the verb phrase “objected to the proposal.” So serves as verbal substitution. Academic texts frequently use this to maintain flow.
9. one
“One” substitutes for “framework.” It signals a parallel comparison between two singular items of the same category.
10. be
Ellipsis removes the repeated adjective phrase after “would.” Be maintains auxiliary structure without restating the complement.
11. were
“Not all were” omits the adjective “controlled.” The predicate is understood from context. Were preserves tense and agreement while allowing predicate ellipsis.
12. so
“Was not so” substitutes for “convincing.” So functions as adjectival substitution. This is common after linking verbs like “be” or “seem.”
13. one
“One” substitutes for “draft.” It refers to another item of the same type and avoids redundancy.
14. so
“Proved to be so” substitutes for “controversial.” So replaces the adjective complement. This is a high-frequency formal substitution pattern.
15. be
After “thought to,” ellipsis removes the repeated complement adjective. Be completes the infinitive structure. The full clause would repeat previously mentioned descriptive content.
