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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较难
  • 浏览 2009

______________ twice a year, whether it is a car, a bus or a truck, is the rule that every driver must obey in this city.

A.Examining B.Examined
C.Having been examined D.Being examined
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相关知识点

twiceayear,whetheritisacar,abu