题目内容
We used to have a discussion, ___?
A.did you B.didn’t we C. used we D. didn't used we
B
解析:
used可看成了行为动词,因此这里要用didn’t we。

练习册系列答案
相关题目
题目内容
We used to have a discussion, ___?
A.did you B.didn’t we C. used we D. didn't used we
B
used可看成了行为动词,因此这里要用didn’t we。