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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 817

The teacher’s efforts ______ when one of his students was admitted to Beijing University last summer.

A.paid back B.paid off C.paid for D.paid out
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Theteacher’seffortswhenoneofhi