— Wasnt it Dr Wang who spoke to you just now? — .A. I didnt know he wasB. Yes it wasC

问题补充：

— Wasn it Dr Wang who spoke to you just now?

— .

A. I didn know he was

B. Yes， it was

C. No， he wasn

D. Yes， he did

答案：

A. I didn know he was

(答案→)B. Yes， it was

C. No， he wasn

D. Yes， he did

解析：回答为肯定形式，电话用语用it