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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 2056

—Look! A book is on the floor. Whose is it?
—It ______be Rick's. It has his name on it.

A.mustn't B.can't C.must D.need
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—Look!Abookisonthefloor.Whosei