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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1765

—Who ______ it be that hasn't handed in his homework?
—It ______ be Bob. He handed it in yesterday.

A.can; mustn't B.must; can
C.can; can't D.may; must
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—Whoitbethathasnthandedinhisho