Question

【题目】The teacher asked the boys to be quiet, but they just kept .

A.talkB.talkingC.to talkD.to talking

Answer 1

【答案】B

【解析】

句意：老师要求孩子们安静，但他们只是不停地说话。

A. talk是动词原形；B. talking是V-ing；C. to talk是动词不定式；D. to talking其中to作介词。keep doing sth.不停地做某事，固定结构。故选B。