题目内容
18．-Hi，Mike，I saw Jim in the zoo just now．-It ______ be him．He has gone to Beijing．（ ）
| A． | can't | B． | must | C． | mustn't | D． | can |
分析 --嗨，Mike，我刚才在动物园看见Jim了．
--不可能是他．他去北京了．
解答 答案：A．
can't不可能；must一定，必须；mustn't不可以；can可能．根据He has gone to Beijing，可知Jim去北京了，所以那个人不可能是他．can't不可能．故选A．
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并作出正确选择．
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