问题
选择题
They used to go to concerts on Sunday,______? [ ]
A. didn't they
B. don't they
C. did they
D. used it
答案
答案：D
搜题请搜索小程序“爱下问搜题”
They used to go to concerts on Sunday,______? [ ]
A. didn't they
B. don't they
C. did they
D. used it
答案：D