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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1213

Every ________ had been made in order to save the boy with the H5N1 bird flu, but all in vain. He died at last.

A.effect B.affect C.infect D.effort
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Everyhadbeenmadeinordertosavet