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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1074

--- Do you hear someone _____ on the door?   --- Yes. It is late at night. Who can _____ be?

A.knock; he B.knock; it
C.knocking; he D.knocking; it
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Doyouhearsomeoneonthedoor?Yes.