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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 134

We ________ here at lunch time; we were delayed at the airport, though.

A.could be B.should be
C.must have been D.would have been
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Wehereatlunchtime;weweredelaye