The children do their homework in the evening.划线部分为：in the evening 对划线部分提问
问题描述：
The children do their homework in the evening.划线部分为：in the evening 对划线部分提问
答
when do the children do their homework?
答
When do the children do their homework?
答
对时间提问,用when.
When do the children do their homework?
答
When did the children do their homework?