问题补充:
When the teacher came in, all of us .
A. stopped talking
B. stopped to talk
C. stop talking
D. stop to talk
答案:
(答案→)A. stopped talking
B. stopped to talk
C. stop talking
D. stop to talk
解析:句意是:当老师进来时我们都停止了说话。根据宾语从句时态一致原则,所以stop用过去式;stop to do是开始做正在做的之外的事的意思,stop doing 是停止正在做事情。根据句意是停止不说话了,故选A。