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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1279

The fire,believed to      due to illegal construction on the building’s roof, was brought
under control after an hour.

A.have occurred B.occur
C.have been occurring D.be occurring
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Thefire,believedtoduetoillegal