does mr smith live next door to you

问题描述:

does mr smith live next door to you
——Does Mr Green live next door to you?
——No,but he_______
A,used to B,used to do
C,used to be D,used to live
求分析其他选项

——Does Mr Green live next door to you?
——No,but he_used to _(省略了live next door to me)