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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1591

You _____ be tired; you have been working for so long a time,
but he _____ be tired; he has just begun to work.

A.may not; must B.must; may not C.can’t; must D.must; can’t
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Youbetired;youhavebeenworkingf