Which sentence correctly uses comparative ellipsis, omitting the repeated verb after "than" in a benchmark comparison?
"The new indexing algorithm runs faster than the old one" correctly uses comparative ellipsis: the repeated verb "runs" and even the repeated noun "algorithm" (replaced by "one") are omitted after "than", since restating them would be redundant. Option A repeats the full clause "the old indexing algorithm runs" unnecessarily, which is grammatical but verbose and not the ellipsis pattern being tested. Option C adds an extra, ungrammatical object "it" after "runs". Option D creates a confused, ungrammatical mix of auxiliary inversion and a repeated verb.
2 / 40
Which sentence correctly uses ellipsis with "as...as" to compare two systems' throughput without repeating the full clause?
"The read replica handles as much traffic as the primary does" correctly uses ellipsis with the auxiliary "does" standing in for the repeated verb phrase "handles traffic", the standard way to avoid redundancy in "as...as" comparisons. Option A spells out the full repeated clause, which is grammatical but not the concise ellipsis pattern intended here. Option C incorrectly uses "is" instead of "does" to stand for the action verb "handles". Option D inverts the subject and auxiliary ("does the primary"), which is not standard word order for this kind of comparative ellipsis.
3 / 40
Which sentence correctly uses comparative ellipsis to compare memory usage across three benchmark runs without repeating "used" each time?
"Run A used 2GB of memory, Run B 2.5GB, and Run C 3GB" correctly uses gapping, a form of ellipsis common in parallel benchmark reporting, where the repeated verb "used" is omitted entirely from the second and third clauses since it is recoverable from context. Option A spells out "used" in every clause, which is correct English but not the ellipsis pattern being tested. Option C incorrectly leaves "used" dangling with stray commas, producing broken parallelism. Option D incorrectly uses "did" as a substitute verb, which is not the standard gapping pattern (gapping omits the verb rather than replacing it with "do").
4 / 40
Which sentence correctly uses ellipsis after "than" when comparing a metric to a specific number, omitting the repeated subject and verb?
"Response times were higher than expected" correctly uses the common ellipsis pattern "than expected", omitting the full clause "than they were expected to be", which is standard, idiomatic phrasing in performance reports. Option B unnecessarily restates "it was expected", which is also redundant and slightly awkward given "response times" is plural, not "it". Option C is a wordy, ungrammatical restatement. Option D scrambles the word order into an ungrammatical sequence.
5 / 40
Which sentence correctly uses comparative ellipsis to compare latency figures across two configurations, omitting the repeated unit and noun after "than"?
"Configuration B had lower latency than Configuration A" correctly uses ellipsis, omitting the repeated verb phrase "had latency" after "than", leaving just the compared subject, the concise and standard way to phrase this comparison. Option A spells out the redundant repetition "had latency" again. Option C incorrectly repeats the comparative adjective "lower" as well, which would illogically claim Configuration A also had unusually low latency relative to itself. Option D incorrectly inverts subject and verb ("had Configuration A"), which is not standard word order for this ellipsis pattern.
6 / 40
John: "The new database performs better than the old one. It's faster, more scalable, and uses less memory."
This question tests comparative ellipsis after 'than' in a performance comparison. The correct answer uses the implied verb 'performs'— omitting 'it performs' to avoid redundancy. The other options incorrectly rephrase the comparison with full clauses, violating the principle of comparative ellipsis.
7 / 40
"The API response indicates that version 2.5 has a 15% lower latency than version 2.0."
This scenario focuses on comparing numerical metrics. The correct answer employs comparative ellipsis after 'than' by omitting the repeated 'is'. The other choices either rephrase the comparison with full clauses or incorrectly use the verb form.
8 / 40
"During the standup, Sarah reported that Service A had a higher error rate than Service B."
This question tests comparative ellipsis in a conversational setting. The correct answer uses the implied 'has' after 'than', avoiding repetition. Options B and C are overly verbose, while option D adds unnecessary qualifiers.
9 / 40
"In the PR description for feature X, we noted that its throughput was approximately 20% higher than baseline."
This scenario tests comparative ellipsis in a technical document. The correct answer omits 'is' after 'than' when comparing throughput values. The other options rephrase the comparison with full clauses or use incorrect phrasing regarding the comparison.
10 / 40
"The code review comment stated that the new implementation's CPU usage was approximately 30% lower than the previous one."
This question focuses on comparing resource utilization. The correct answer utilizes comparative ellipsis after 'than' by omitting 'is'. Options A and B are redundant, and option C presents the comparison in reverse.
11 / 40
John: "The new database performs better than the old one. It's faster, more scalable, and uses less memory."
This question tests comparative ellipsis after 'than' in a performance comparison. The correct answer uses the implied verb 'performs'— omitting 'it performs' to avoid redundancy. The other options incorrectly rephrase the comparison with full clauses, violating the principle of comparative ellipsis.
12 / 40
"The API response indicates that version 2.5 has a 15% lower latency than version 2.0."
This scenario focuses on comparing numerical metrics. The correct answer employs comparative ellipsis after 'than' by omitting the repeated 'is'. The other choices either rephrase the comparison with full clauses or incorrectly use the verb form.
13 / 40
"During the standup, Sarah reported that Service A had a higher error rate than Service B."
This question tests comparative ellipsis in a conversational setting. The correct answer uses the implied 'has' after 'than', avoiding repetition. Options B and C are overly verbose, while option D adds unnecessary qualifiers.
14 / 40
"In the PR description for feature X, we noted that its throughput was approximately 20% higher than baseline."
This scenario tests comparative ellipsis in a technical document. The correct answer omits 'is' after 'than' when comparing throughput values. The other options rephrase the comparison with full clauses or use incorrect phrasing regarding the comparison.
15 / 40
"The code review comment stated that the new implementation's CPU usage was approximately 30% lower than the previous one."
This question focuses on comparing resource utilization. The correct answer utilizes comparative ellipsis after 'than' by omitting 'is'. Options A and B are redundant, and option C presents the comparison in reverse.
16 / 40
John: "The new database performs better than the old one. It's faster, more scalable, and uses less memory."
This question tests comparative ellipsis after 'than' in a performance comparison. The correct answer uses the implied verb 'performs'— omitting 'it performs' to avoid redundancy. The other options incorrectly rephrase the comparison with full clauses, violating the principle of comparative ellipsis.
17 / 40
"The API response indicates that version 2.5 has a 15% lower latency than version 2.0."
This scenario focuses on comparing numerical metrics. The correct answer employs comparative ellipsis after 'than' by omitting the repeated 'is'. The other choices either rephrase the comparison with full clauses or incorrectly use the verb form.
18 / 40
"During the standup, Sarah reported that Service A had a higher error rate than Service B."
This question tests comparative ellipsis in a conversational setting. The correct answer uses the implied 'has' after 'than', avoiding repetition. Options B and C are overly verbose, while option D adds unnecessary qualifiers.
19 / 40
"In the PR description for feature X, we noted that its throughput was approximately 20% higher than baseline."
This scenario tests comparative ellipsis in a technical document. The correct answer omits 'is' after 'than' when comparing throughput values. The other options rephrase the comparison with full clauses or use incorrect phrasing regarding the comparison.
20 / 40
"The code review comment stated that the new implementation's CPU usage was approximately 30% lower than the previous one."
This question focuses on comparing resource utilization. The correct answer utilizes comparative ellipsis after 'than' by omitting 'is'. Options A and B are redundant, and option C presents the comparison in reverse.
21 / 40
John: "The new database performs better than the old one. It's faster, more scalable, and uses less memory."
This question tests comparative ellipsis after 'than' in a performance comparison. The correct answer uses the implied verb 'performs'— omitting 'it performs' to avoid redundancy. The other options incorrectly rephrase the comparison with full clauses, violating the principle of comparative ellipsis.
22 / 40
"The API response indicates that version 2.5 has a 15% lower latency than version 2.0."
This scenario focuses on comparing numerical metrics. The correct answer employs comparative ellipsis after 'than' by omitting the repeated 'is'. The other choices either rephrase the comparison with full clauses or incorrectly use the verb form.
23 / 40
"During the standup, Sarah reported that Service A had a higher error rate than Service B."
This question tests comparative ellipsis in a conversational setting. The correct answer uses the implied 'has' after 'than', avoiding repetition. Options B and C are overly verbose, while option D adds unnecessary qualifiers.
24 / 40
"In the PR description for feature X, we noted that its throughput was approximately 20% higher than baseline."
This scenario tests comparative ellipsis in a technical document. The correct answer omits 'is' after 'than' when comparing throughput values. The other options rephrase the comparison with full clauses or use incorrect phrasing regarding the comparison.
25 / 40
"The code review comment stated that the new implementation's CPU usage was approximately 30% lower than the previous one."
This question focuses on comparing resource utilization. The correct answer utilizes comparative ellipsis after 'than' by omitting 'is'. Options A and B are redundant, and option C presents the comparison in reverse.
26 / 40
John: "The new database performs better than the old one. It's faster, more scalable, and uses less memory."
This question tests comparative ellipsis after 'than' in a performance comparison. The correct answer uses the implied verb 'performs'— omitting 'it performs' to avoid redundancy. The other options incorrectly rephrase the comparison with full clauses, violating the principle of comparative ellipsis.
27 / 40
"The API response indicates that version 2.5 has a 15% lower latency than version 2.0."
This scenario focuses on comparing numerical metrics. The correct answer employs comparative ellipsis after 'than' by omitting the repeated 'is'. The other choices either rephrase the comparison with full clauses or incorrectly use the verb form.
28 / 40
"During the standup, Sarah reported that Service A had a higher error rate than Service B."
This question tests comparative ellipsis in a conversational setting. The correct answer uses the implied 'has' after 'than', avoiding repetition. Options B and C are overly verbose, while option D adds unnecessary qualifiers.
29 / 40
"In the PR description for feature X, we noted that its throughput was approximately 20% higher than baseline."
This scenario tests comparative ellipsis in a technical document. The correct answer omits 'is' after 'than' when comparing throughput values. The other options rephrase the comparison with full clauses or use incorrect phrasing regarding the comparison.
30 / 40
"The code review comment stated that the new implementation's CPU usage was approximately 30% lower than the previous one."
This question focuses on comparing resource utilization. The correct answer utilizes comparative ellipsis after 'than' by omitting 'is'. Options A and B are redundant, and option C presents the comparison in reverse.
31 / 40
John: "The new database performs better than the old one. It's faster, more scalable, and uses less memory."
This question tests comparative ellipsis after 'than' in a performance comparison. The correct answer uses the implied verb 'performs'— omitting 'it performs' to avoid redundancy. The other options incorrectly rephrase the comparison with full clauses, violating the principle of comparative ellipsis.
32 / 40
"The API response indicates that version 2.5 has a 15% lower latency than version 2.0."
This scenario focuses on comparing numerical metrics. The correct answer employs comparative ellipsis after 'than' by omitting the repeated 'is'. The other choices either rephrase the comparison with full clauses or incorrectly use the verb form.
33 / 40
"During the standup, Sarah reported that Service A had a higher error rate than Service B."
This question tests comparative ellipsis in a conversational setting. The correct answer uses the implied 'has' after 'than', avoiding repetition. Options B and C are overly verbose, while option D adds unnecessary qualifiers.
34 / 40
"In the PR description for feature X, we noted that its throughput was approximately 20% higher than baseline."
This scenario tests comparative ellipsis in a technical document. The correct answer omits 'is' after 'than' when comparing throughput values. The other options rephrase the comparison with full clauses or use incorrect phrasing regarding the comparison.
35 / 40
"The code review comment stated that the new implementation's CPU usage was approximately 30% lower than the previous one."
This question focuses on comparing resource utilization. The correct answer utilizes comparative ellipsis after 'than' by omitting 'is'. Options A and B are redundant, and option C presents the comparison in reverse.
36 / 40
John: "The new database performs better than the old one. It's faster, more scalable, and uses less memory."
This question tests comparative ellipsis after 'than' in a performance comparison. The correct answer uses the implied verb 'performs'— omitting 'it performs' to avoid redundancy. The other options incorrectly rephrase the comparison with full clauses, violating the principle of comparative ellipsis.
37 / 40
"The API response indicates that version 2.5 has a 15% lower latency than version 2.0."
This scenario focuses on comparing numerical metrics. The correct answer employs comparative ellipsis after 'than' by omitting the repeated 'is'. The other choices either rephrase the comparison with full clauses or incorrectly use the verb form.
38 / 40
"During the standup, Sarah reported that Service A had a higher error rate than Service B."
This question tests comparative ellipsis in a conversational setting. The correct answer uses the implied 'has' after 'than', avoiding repetition. Options B and C are overly verbose, while option D adds unnecessary qualifiers.
39 / 40
"In the PR description for feature X, we noted that its throughput was approximately 20% higher than baseline."
This scenario tests comparative ellipsis in a technical document. The correct answer omits 'is' after 'than' when comparing throughput values. The other options rephrase the comparison with full clauses or use incorrect phrasing regarding the comparison.
40 / 40
"The code review comment stated that the new implementation's CPU usage was approximately 30% lower than the previous one."
This question focuses on comparing resource utilization. The correct answer utilizes comparative ellipsis after 'than' by omitting 'is'. Options A and B are redundant, and option C presents the comparison in reverse.
What will I practise in "Comparative Ellipsis in Benchmark Comparisons — IT Grammar Exercise"?
Practise omitting repeated verbs, subjects, and clauses after "than" and "as...as" when writing concise, natural benchmark and performance comparison reports.
How many exercises are in this module?
This module has 40 multiple-choice exercises, each with instant feedback and a full explanation of the correct answer.
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Where can I find more Grammar exercises?
Browse the full Grammar hub for related drills, or check the "Next up" link below to continue with a connected topic.
How is this different from reading an article on the same topic?
Articles explain grammar rules in prose; this exercise tests and reinforces those rules through active recall with immediate feedback — the two work best together.
Who writes these exercises?
Every exercise is written by the CoderSlingo team, drawing on real workplace English used in IT roles, then reviewed for accuracy and clarity.