They stoped _______,but now I'm getting interested.

问题描述:

They stoped _______,but now I'm getting interested.
A.listening B.to listen C.listen D,having liste
选哪个,为什么呢,

A stop doing sth,停止做某事
句子意思为:他们停止听了,但现在我开始感兴趣了.
还有stop to do sth 是停下来,去做某事的意思,即要去做这里的sth了.不符合句意.