2. 外语
  3. I ______ my wallet when I was shopping in the store.

I ______ my wallet when I was shopping in the store.

admin2008-08-13  45
问题 I ______ my wallet when I was shopping in the store.
选项 A、must have dropped
B、should have dropped
C、could drop
D、ought to have dropped
答案A
解析 本题考查情态动词表推测的用法，must have done表示对过去情况的肯定推测。题意为我一定是在逛街的时候把钱包丢了，所以应选A。
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