问题
选择题
— Is your mother a bus driver？
— Well, she _______________, but now she is a shopkeeper.
A．used to
B．used to be
C．use to be
D．is used to being
答案
答案：B
used to do 的意思是，过去常常做某事，而现在不做了. be used to doing /sth 是习惯于（做）某事 的意思