--She looks rather upset. She have failed the exam. --I guess so. It's very difficult after all. A. could B. should C. must D. might 查看更多

 

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——She looks rather upset. She          have failed the exam.

——I guess so. It's very difficult after all.

A. could               B. should                C. must                 D. might

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 — She looks rather upset. She        the exam.

— I guess so. It’s very difficult after all.

A. must have failed   B. can fail

C. would have failed D. should fail

 

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