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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
  • 浏览 310

If human beings had been a bit less greedy and cruel, more birds and animals _____dying out.

A.ought to avoid B.could have been avoided
C.should have avoided D.might have avoided
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Ifhumanbeingshadbeenabitlessgr