I would have finished my composition by now if I had stopped ( )with him

问题描述:

I would have finished my composition by now if I had stopped ( )with him
A.talking B.to talk
应该选哪一个,这题我一直很矛盾的

stop to do 停下去做别的事(不定式表目的)
stop doing 停下正在做的事
根据题意:如果我停止和他说话,那么我现在早就写完文章了
所以是stop doing 停下正在做的事
选A