Question

——What’s your mother?——She_________ a teacher, but now she is a doctor. A．used to be B．

——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

Answer 1

A

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···。