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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1938

Though he failed in the experiment again and again, he didn’t______, and at last, he made it.

A.lose his heart B.lose heart
C.break his heart D.make up his mind
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