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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1341

We should keep in mind that the earth is our only home and only by saving the environment________ourselves.

A.we can save  B.can we save
C.we must save  D.must we save
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Weshouldkeepinmindthattheearth