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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1120

The police have started an ___ into the cause of the fire which broke out in the hotel last night.

A.appreciation B.investigation C.operation D.extension
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Thepolicehavestartedanintothec