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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 656

Having a trip abroad is certainly good for the old couple, but it remains ________whether they will enjoy it.

A.to see
B.to be seen
C.seeing
D.seen
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Havingatripabroadiscertainlygo