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  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:878

----I’m sorry, but there is no smoking on this flight.    ----Oh, I _____ that. Sorry, I won’t again.

A.don’t know B.didn’t know
C.won’t know D.haven’t known
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I’msorry,butthereisnosmokingon