Question

【题目】When the teacher stopped __________him，he stopped __________ at once．
A.to look at; talk
B.looking at; talk
C.to look at; talking
D.looking at; talking

Answer 1

【答案】C
【解析】句意“当老师停下来看着他，他立刻停止谈话。”stop to do sth,停下（手中正在干的事情）来做另一件事；stop doing sth.停下手中正在做的的事情，这里可以根据情景可以做出判断。故填C。