Ifhe       harder,hewillcatchupwithussoon. A.study     ...

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问题详情:

Ifhe       harder,hewillcatchupwithussoon. A.study     ...

If he        harder, he will catch up with us soon. 

A. study                       B. studies                     C. will study                 D. studied

【回答】

B

知识点:动词时态

题型:选择题

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