___ the apartment,the fighfighters shut off the gas,open the windows and rescued the old couple.

题目

___ the apartment,the fighfighters shut off the gas,open the windows and rescued the old couple.
A.To break into B.To be broken into C.Having broken into D.Broken into
选哪一个?为什么?

答案

答案选 C.Having broken into
首先break into 这个动作与主语the fighfighters 是主动关系,其次,这个动作发生在后面一系列的shut,open,rescued这些动作之前,所以要用完成时态的分词结构