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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
  • 浏览 1758

It is thought that one billion people I the world,  _   is half the word’s workers, earn their living by farming.

A.if B.that C.which D.what
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Itisthoughtthatonebillionpeopl