Where is my book .I______ it.

题目

Where is my book .I______ it.
A.might lose B.would have lost C.should have lost D.must have lost
选什么 为什么

答案

D
Would/should/must三个表示语气的词语,搞清楚意思.would have lost 基本没有这种用法,因为would 有将来的意思,have lost 是完成时,有过去的意义,这两者不能搭配使用.
should have lost是本应该丢失的,显然意思不符合全句的意思.must have lost肯定已经丢了.符合句意.至于might lose,这里明显是推测已经发生的事情,不能用一般现在时.