12.gina takes some books to the classroom.（否定句）

12.gina takes some books to the classroom.（否定句）
Gina doesn't take any books to the classroom.
14.those are her cousins.（改为单数形式）
That is her cousins.
15.we have some classes on friday.（改为一般疑问句）
Do you have any classes on friday?
16.is that a white table?(先做否定回答,然后把原句便复数）
No,it isn't.
Are those white tables?
17.my mother's mary.(提问）
What's your mother's name?
18.beijing is in the map.（提问）
Where is Beijing?
19.it is a pen (改为一般疑问句）
Is it a pen?
20.her favorite color is blue.(提问）
What's her favorite color?
21.we join the interesting club.（用she改写句子）
She joins the interesting club.
22.i have some tennis racket.（提问）
What do you have?
23.is,my,where,bay（连词成句）
Where is my bay?
24.is this his hat?（做肯定答案）
Yes,it is.
25.john does his work in the afternoon.(改为否定句）
John does not do his work in the afternoon.
26.we have black and blue sweaters.（同义句）
We have got black and blue sweaters.