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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1063

. The concert was a great success--there wasn’t a single empty seat in the concert hall, ____ it was very cold.

A.because B.when C.unless D.although
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.Theconcertwasagreatsuccessthe