Mr Green to the manager now. You’d better call him later.A. is talkingB. talkedC. talkD.

问题补充：

Mr Green to the manager now. You’d better call him later.

A. is talking

B. talked

C. talk

D. talks

答案：

(答案→)A. is talking

B. talked

C. talk

D. talks

解析：句意：格林先生现在正在跟经理谈话。你最好以后给他打电话。根据时间副词now可知此处用现在进行时be doing, 故选A。