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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1116

The students ___ busily when Miss Brown went to get a book she ___ in the office.

A.had written ; left B.were writing ;has left
C.had written ;had left D.were writing ;had left
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ThestudentsbusilywhenMissBrown