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18.-where is Tom?He is nowhere to be found.
-I'm not sure,but he _____ have gone to meet Lucy,because Lucy called him earlier.(  )
A.mustB.shouldC.mightD.can

分析 --Tom在哪?到处都找不到他.
--我不确定,但是他有可能去见Lucy了,因为Lucy早些时候打电话给他.

解答 答案:C
解析:A:必须;一定;B:应该;C:可能;或许;D:可能.根据前面的"我不确定"可知Tom"可能"去见Lucy了,故本题答案为C选项.注意:can表示推测时一般用于否定句和疑问句,故本题不能选择D选项.

点评 本题考查情态动词,做此类题目时一定要分析每个选项中情态动词的含义及其用法,再结合原文及句意确定最终的答案.

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