Scientists have found that people who are active at a ...

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Scientists have found that people who are active at a moderate level experience a long list of health benefits and that physical activity —- vigorous.

A. has to be

B. must be

C. needn’t be

D. had better be

Select your answer:

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Which word does not mean lovely?
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A good diet and a realistic exercise plan (combines, combine) to help one lose weight.

A. Combines
B. Combine