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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
  • 浏览 296

I was on the highway when this car went past fol. Lowed by a police car. They ______ at least 150 kilometers an hour.

A.should have been doing B.must have been doing
C.could have done D.would have done
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Iwasonthehighwaywhenthiscarwen