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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 2143

Last month 3 people got injured in a gas explosion,        has not been discovered yet.

A.whose cause B.the cause of that C.which cause D.the cause
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Lastmonth3peoplegotinjuredinag