4道划线部分提问,4道改为选择疑问句,4道一般疑问句.

4道划线部分提问:
She is singing.( 对singing 提问）：What is she doing?
He goes to school on Sundays ( 对 on Sundays 提问)：When does he go to school?
We are in the study.(对in the study 提问）：Where are you?
It's my comb.(对my 提问）：Whose comb is it?
4道改为选择疑问句
Who's taller,you or Su Yang?Su Yang is.
Whose bag is heavier,yours or mine?Mine is.
Is she singing or dancing She is dancing.
Do you go to school on Sunday or Monday?On Monday.
4道一般疑问句.
Is this a book?Yes.
Can you play the piano?Yes.
Do you like fishing?No.
Is there a vase here?Yes.