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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
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—Why didn't you answer my phone when I phoned you at about 11 p. m. yesterday?
—I ___________and failed to hear the phone.

A.might have slept B.must be sleeping
C.might be sleeping D.must have been sleeping
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—WhydidntyouanswermyphonewhenI