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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 490

---Has Peter handed in his paper yet?
---I’m not sure.He _______ on it last week.

A.was working B.has worked
C.worked D.had worked
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HasPeterhandedinhispaperyet?I’