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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1535

_____ is no doubt ______ you have to remain seated and fasten your seatbelt before the plane lands.

A.There; whether B.It; that C.There; that D.It; whether
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isnodoubtyouhavetoremainseated