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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 2049

The students     busily when Mrs White went to get a book she    in the classroom.
A、had written; left
B、were writing; has left
C、were writing; had left

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ThestudentsbusilywhenMrsWhitew