Im sorry I cant stop with you. I have much work to do.A. to talkB. talkingC. talkD. talk

问题补充：

Im sorry I can stop with you. I have much work to do.

A. to talk

B. talking

C. talk

D. talked

答案：

(答案→)A. to talk

B. talking

C. talk

D. talked

解析：此题重点考查stop to do sth和stop doing sth之间的区别；前者表示停下来去做某事；后者表示停止做某事。