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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 298

I have been staying up until midnight since Monday, _____ on my paper. I need to catch up on some sleep this weekend.

A.working B.worked
C.works D.to work
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Ihavebeenstayingupuntilmidnigh