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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
  • 浏览 1098

Unfortunately, when I dropped in, Professor Smith ________, so we only had time for a few words.

A.has just left B.had just left C.just left D.was just leaving
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Unfortunately,whenIdroppedin,P