Swimming in the ocean _______ one of the most popular activities during summer vacation.
6
readingWhich choice completes the text so that it conforms to the conventions of Standard English?
A
are
B
were
C
have been
D
is
Correct Answer: D
Choice D is the best answer. This question tests subject-verb agreement with gerund subjects.
- Context clues: "Swimming in the ocean" is a gerund phrase acting as a singular subject.
- Meaning: Gerund phrases as subjects take singular verbs.
- Verify: "Swimming in the ocean is one of the most popular" is correct.
💡 Strategy: Gerund phrases acting as subjects are singular.
Choice A is incorrect because "are" is plural. Choice B is incorrect because "were" is plural. Choice C is incorrect because "have been" is plural.