I was on the highway when this car went past fol. Lowed by a police car. They ______ at least 150 kilometers an hour.

A．should have been doing

B．must have been doing

C．could have done

D．would have done

简答题（5分）

他悄声说道。“我的生命难道果真取决这些铃铛当中任何一只轻微的颤动吗！”他合起双掌，默默祷告：“呵！小铃铛们，千万别响；小铃铛们，千万别晃……”

他是谁？他在哪？发生了什么事？结果如何？ （《巴黎圣母院》）