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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 2103

The experiment shows that proper amounts of exercise ,if _______regularly, can improve our health.

A.being carried out B.carrying out C.carried out D.to carry out
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Theexperimentshowsthatproperam