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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 473

To keep healthy, Professor Johnson __________cycling as a regular form of exercise after he retired.

A.made up B.put up
C.took up D.carried out
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Tokeephealthy,ProfessorJohnson