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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1702

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

A.caught on B.set out C.made for D.took up
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Tokeephealthy,ProfessorJohnson