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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 521

—Has your friend completed his design?
—Not yet. He _______ on it last night.

A.worked B.has worked
C.is working D.was working
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—Hasyourfriendcompletedhisdesi