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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 841

   – Have they found out the _____ of the fire?
--  Yes. It was a cigarette end that _____ the fire.

A.cause; started B.reason; caused
C.causing; caused D.reason; cause
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相关知识点

–Havetheyfoundouttheofthefire?