题目

题型：不详难度：来源：

——What’s your mother?
——She_________ a teacher, but now she is a doctor.

A．used to be

B．was used to

C．use to be

D．is used to be

答案

A

解析

根据后文答语内容, but now she is a doctor.可知答案为A,表示过去常常是···。