题目内容

【题目】When our teacher came into the classroom, we stopped (talk).

【答案】talking
【解析】talk说话(动词)。stop to do sth.停下来去做某事(另外的事),stop doing sth.停止做某事(正在做的事);句意:当老师走进教师时,我们停止了讲话。应该用stop doing sth.,故填:talking。

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