Zumba is a fitness activity which helps _________ cardiovascular fitness and __________ calories, making it a popular choice for those looking to enhance their overall physical health.单项选择题
A
a) improves; burns
B
b) improving; burning
C
c) improve; burns
D
d) improve; burned

Question

Zumba is a fitness activity which helps _________ cardiovascular fitness and __________ calories, making it a popular choice for those looking to enhance their overall physical health.

BlackTom AI · Accepted Answer

The question presents a sentence with a blank to be filled: Zumba is a fitness activity which helps _________ cardiovascular fitness and __________ calories, making it a popular choice for those looking to enhance their overall physical health.

Option a) a) improves; burns
- Here, the subject 'Zumba' is singular, so the verb should be in the third-person singular present form: 'improves' fits well.
- For the second blank, 'burns' is also in the third-person singular present tense, which correctly matches 'calories' (plural) as the object of the verb, yielding the natural phrase 'burns calories'.
- Overall, this option maintains correct subject-verb agreement and natural collocation: 'improves cardiovascular fitness and burns calories.'

Option b) b) improving; burning
- 'Improving' and 'burning' are present participles used in continuous or adjectival phrases, but after 'helps' the structure typically requires a base verb form (bare infinitive) or the simple present with -s; 'improving' does not harmonize with the auxiliary-like 'helps' in this context.
- The resulting phrasing 'helps improving cardiovascular fitness and burning calories' sounds awkward and grammatically incorrect for this sentence.

Option c) c) improve; burns
- After 'helps,' the verb should agree with the subject; since 'Zumba' is singular, the base form 'improve' is incorrect here (the correct form would be 'improves').
- Because of this mismatch, this option is grammatically unacceptable despite the second part 'burns' being correct in isolation.

Option d) d) improve; burned
- This option again uses the incorrect base form 'improve' for a singular subject, which breaks subject-verb agreement.
- Additionally, 'burned calories' uses the past participle, which does not fit with the present tense meaning of the sentence. The standard phrasing uses the present tense 'burns calories.'

In summary, option a) aligns with standard English grammar: singular subject requires 'improves' and 'burns' in the present tense, producing a natural and correct sentence about benefits to cardiovascular fitness and calorie burn.

Zumba is a fitness activity which helps _ cardiovascular fitness and __ calories, making it a popular choice for those looking to enhance their overall physical health.单项选择题

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Zumba is a fitness activity which helps _________ cardiovascular fitness and __________ calories, making it a popular choice for those looking to enhance their overall physical health.单项选择题