If I can stop them____ther ,I'll do it.

问题描述:

If I can stop them____ther ,I'll do it.
A.to go B.goneC.goingD.go

准确的说应该是stop sb.from doing sth.,而其中的from是可以省略的,所以选C
而平时的stop to do sth.是指停下来要开始做某事
stop doing sth.是停止做某事