按要求句型转换。

1. They give us some candies as a treat. (改为同义句)          

They give us a _______ _______some candies.   

2. He does some homework at night.(改为否定句)     

He _______do_______homework at night.    

3. My father is a teacher .My mother is a teacher,too.(改为同义句) 

My _______are_______teachers.    

4. Amy goes to the school library every Wednesday.(对划线部分提问)   

_______ _______does Amy go to the school library?

5. I help him, he helps me.(改为同义句)

We help _______ _______.

试述20世纪90年代以来英国行政裁判制度的变革。