I received a call one morning from a lady but she phoned as she kept asking to speak to

问题补充：

I received a call one morning from a lady, but she phoned, as she kept asking to speak to someone else who I didn’t know at all.

A. by accident

B. by mistake

C. by chance

D. by force

答案：

A. by accident

(答案→)B. by mistake

C. by chance

D. by force

解析：by accident偶然；by mistake错误地；by chance偶然；by force靠武力。句意：一天早晨我接到一个女士打来的电话，但是她打错了，她一直在说让某一人我不认识的人接电话。根据句意故选B。