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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 160

China has a growing number of middle-class parents who _____ for years to get their only child into a top school.

A.had been saved B.have saved
C.had saved D.have been saved
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Chinahasagrowingnumberofmiddle