1. 按要求改写句子，每空一词。

1. （1） She has already finished her homework. (改为否定句) 

   She   her homework .

3. （2） He made me do homework for him.（改为被动语态） 

   I was made   homework for him.

5. （3） Gina's never been to the Great Wall.（完成反义疑问句）

   Gina's never been to the Great Wall,  ?

7. （4） The river used to be so clean.（改为一般疑问句）

    the river  to be so clean?

9. （5） The little boy bought the toy car two days ago. (改为同义句) 

   The little boy   the toy car for two days.