1.used to的一般疑问句有两种形式都可以,举例如下：
1) Did you use to get up early in the morning?
回答：Yes,I did.No,I didn't.
2）Used you to get up early in the morning?
其回答是：Yes,I used.
No,I usedn't.
2.总结其两种回答结构如下：1）Yes,人称代词主格 + did.
No,人称代词主格 + didn't.
2) Yes,人称代词主格 + used.
No,人称代词主格 + usedn't.