题目内容

You _ be tired, for you have worked for quite a long time.He _ be tired, for he has just begun to work.

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You ______ be tired--you've only been working for an hour.

You ______ be tired –you’ve only been working for an hour.

A. must not B. won’t C. can’t D. may not

You ____be tired—you’ve only been working for an hour.

A. must not B. won’t C. can’t D. may not

You ______ be tired - you've only been working for an hour.

A. must not B. won' t C. can' t D. may not

You _____ be tired-----you took a rest only five minutes ago!

A. wouldn’t B. can’t C. mustn’t D. needn’t