题目内容
---The fog in your city must have been very thick; if not, you would have been here as scheduled.
---Yes. Our flight _________ by the thick fog.
A. has put off B. was put off
C. had been put off D. put off
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题目内容
---The fog in your city must have been very thick; if not, you would have been here as scheduled.
---Yes. Our flight _________ by the thick fog.
A. has put off B. was put off
C. had been put off D. put off