题目内容
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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.
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
