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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 426

We spent many years studying the formation of rocks , experiencing many sufferings and even death. But our hard work      in the end , and we made it.

A.paid off B.made up C.gave away D.came out
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Wespentmanyyearsstudyingthefor