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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较难
  • 浏览 134

This machine is very easy     . Anybody can learn to use it in a few minutes.

A.operating B.to be operating C.operated D.to operate
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Thismachineisveryeasy.Anybodyc