-------It’s time to have class. Please stop .OK.A. to talkB. talkingC. talkD. talks

问题补充：

-------It’s time to have class. Please stop . ----- OK.

A. to talk

B. talking

C. talk

D. talks

答案：

A. to talk

(答案→)B. talking

C. talk

D. talks

解析：句意：该上课了。请停止讲话。好的。stop doing sth 停止做某事，stop to do sth停下来去做某事，故选B