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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1596

--- Look at the boy running on the ground. Is it Frank?
--- It ________ be him. I saw him go to the library just now.

A.mustn’t B.can’t
C.needn’t D.might not
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Lookattheboyrunningontheground