给这些句子换换样吧,要按照括号里的要求来换,加油! (10分)
They are English cars.(改为单数句子)
_________  _________  _________English car.
They are my beautiful rulers.(对划线部分提问)
___________  __________they?
There is only one cat on the  ground. (对划线部分提问)
___________  __________cats     __          __   on the ground?
Sally and Nick are twelve. (对划线部分提问)
_____________  __________are Sally and Nick?
Tony,climb the tree! (改为否定句)
Tony,                    the tree!
Are the pencil boxes in your bag new? (改为陈述句)
The pencil boxes                                    new.
Are you all my students? (作否定回答)
No,                   .  
The pencil is on the box.
The box is          the pencil. (改为同义句)