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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1750

—Did you hear that Jack used to be a policeman for two years?
—You’re kidding! He ______, for he’s too short.

A.can’t be B.can’t have been
C.may not be D.may not have been
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—DidyouhearthatJackusedtobeapo