同学,你的问题不明晰,因为疑问句包括一般疑问句和特殊疑问句。所以你想变成哪样?
这里我默认你想变成特殊疑问句 (第三句我就默认变成一般疑问句了):
How many parents do you have?
How many pretty stamps does Bobby have?
Had they had their dinner?
Have you two parents?
Has Bobby a pretty stamp?
Had they have their dinner?
Do I have two parents?
Do Bobby has pretty stamp?
Are they had had their dinner?