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 Sincenobodygavehimanyhelp,he    havedonetheresearchonh...

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问题详情:

 Sincenobodygavehimanyhelp,he    havedonetheresearchonh...

 Since nobody gave him any help, he     have done the research on his own.

A. can                    B. must                  C. would               D. need

【回答】

B

知识点:情态动词

题型:选择题