超星 - 情态助动词 2 - 查题吧

单选题

"Martin was taking pictures of wild animals. "" Oh. no. He ____ killed ."

A. might be
B. might have been

单选题

Professor Wang ______ be in Beijing because I saw him in the library only a few minutes ago.

A. must not be
B. can't
C. may not
D. should not

单选题

" I know she was in because I heard her radio. but she didn't open the door.""She_______ the bell . "

A. mustn't have heard
B. may not have heard
C. needn't have heard
D. can't have heard

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