I missed my breakfast,because I did my piano practise before school.（改为一般疑问句）

I missed my breakfast,because I did my piano practise before school.（改为一般疑问句）
I missed my breakfast,because I did my piano practise before school.（改为一般疑问句）

I missed my breakfast,because I did my piano practise before school.（改为一般疑问句）
Did you miss your breakfast,because you did your piano practise before school?

A: why did you miss your breakfast?
B: because i did my piano practise before school.

Did you miss your breakfast, because you did your piano practise before school？
这里直接加助动词即可，后句不变。
望能采纳。
O(∩_∩)O谢谢！