填空:--Hello,could i speak to Mr.smith?--sorry,wrong number .there is not ( )Mr.smith here.

问题描述:

填空:--Hello,could i speak to Mr.smith?--sorry,wrong number .there is not ( )Mr.smith here.
A不填 B a C the D one

a能不能解释一下呢?thank you very much !!!!!!!这里没有叫史密斯的。不是特指某个史密斯