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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
  • 浏览 181

Every means ___ the river from being polluted.

A.are used to prevent B.are used to preventing C.is used to prevent D.is used to preventing
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Everymeanstheriverfrombeingpol