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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较难
  • 浏览 1015

We _____ in this pool when we were young, but now it _____ fish.

A.are used to swim; used to keep
B.are used to swimming; used to keep
C.used to swimming; is used to keep
D.used to swim; is used for keeping
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Weinthispoolwhenwewereyoung,bu