题目内容
5.---Is Lucy knocking at the door?---No,it _______ be Lucy.She is in Beijing on business.( )
| A. | needn't | B. | Must | C. | can't | D. | may not |
分析 --Lucy 在敲门吗?
--不,不可能是Lucy.她正在北京出差.
解答 答案:C.needn't不必;must一定,必须;can't不可能,表示语气can't较为强烈;may not可能不,表示语气较为婉转.根据She is in Beijing on business,可知Lucy 正在北京出差,所以敲门的不可能是她.can't不可能.语气较为强烈.故选C.
点评 本题考查了情态动词的用法.解答时注意理解句意以及所给选项的意思.
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