Millie didn't go to school because she was ill.对 because she was ill.提问下面还有谢谢They had a party twice a month last year. 对twice a month.提问
问题描述：
Millie didn't go to school because she was ill.对 because she was ill.提问下面还有谢谢
They had a party twice a month last year. 对twice a month.提问
答
Why did Millie not go to school ?
How often do they have a party?
答
Why didn't Millie go to school ?
How often did they have a party a year ?
答
Why didn't Millie go to school?
How often did they have a party last year?