问题补充:
We used to have a discussion, ?
A. did you
B. didn’t we
C. used we
D. didn used we
答案:
A. did you
(答案→)B. didn’t we
C. used we
D. didn used we
解析:used可看成了行为动词,因此这里要用didn’t we。
时间:2022-12-12 14:57:45
We used to have a discussion, ?
A. did you
B. didn’t we
C. used we
D. didn used we
A. did you
(答案→)B. didn’t we
C. used we
D. didn used we
解析:used可看成了行为动词,因此这里要用didn’t we。