单选题 Lost and found items can be picked up in person with the owner's ID ______ regular hours of operation from Monday through Friday.
  • (A) while
  • (B) during
  • (C) as
  • (D) on account of


【正确答案】 B
【答案解析】空格内应填入介词,所以排除A选项。剩下的选项中,能接表示“工作时间”这一时间段的介词是during。as在做介词的时候,表示“以……”,经常出现在题目中。