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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1896

The ambulance was just arriving, for a worker, who ______ the window on the second floor, fell off the window.    

A.had been repairing B.was repairing
C.has been repairing D.would be repairing
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Theambulancewasjustarriving,fo