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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1044

All flights ___________ because of fog. I’m afraid you will have to stay here for another day.

A.had been put off B.called off
C.have been called off D.have put off
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Allflightsbecauseoffog.I’mafra