Question

She usedn't to be fat, used she? ____ even fatter. A. Yes, she did. B. Yes, she used.答案为何是B。

used..? 肯定回答不应该是used to吗？

Answer 1

老外没有再用这样的句子了--She usedn't to be fat, used she?....
B. Yes, she used (to be).
现代应该使用: She didn't use to be fat, did she?
I really don't know what's the matter with you. You didn't use(d) to be so bad tempered. The regulations concerning smoking in public places used not to be taken so seriously in the past.

Answer 2

因为反意疑问是used she？故回答 要一致。