题目内容
18.-Is Jack on duty today?-It ________ be him.It's his turn tomorrow.( )
A. | mustn't | B. | won't | C. | can't | D. | needn't |
分析 --今天杰克值日吗?
--不可能是他值日.明天才轮到他.
解答 答案:C.
mustn't禁止,不许;won't,将不会;can't不可能;needn't不必.根据"It's his turn tomorrow"可知今天不可能是他值日;mustn't表"禁止",常译为"不许",不能表推测,can't不可能.故选C.
点评 本题考查情态动词,要掌握情态动词的用法并结合具体的语境选择出正确的选项.
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