—Can I speak to Mr. Wang please ?— A. Who are you ?B. I’m Wang .C. SpeakingD. Are you jo

问题补充：

—Can I speak to Mr. Wang , please ?

—

A. Who are you ?

B. I’m Wang .

C. Speaking

D. Are you john ?

答案：

A. Who are you ?

B. I’m Wang .

(答案→)C. Speaking

D. Are you john ?

解析：英语中自报姓名用“This is …speaking”这一句型或其它省略形式。其它选项都不是电话用语。