1. 按照要求改写句子。

1. （1） Many people enjoy this sport. (改为被动语态)

   This sport  by many people.

3. （2） Can you tell us how we can play this new game? (改为简单句)

   Can you tell us  this new game?
   

5. （3） It was invented by mistake. (对划线部分提问)

    it invented? 

7. （4） We finished the work with the help of our teachers at last. (改为同义句)

   We finished the work with the help of our teachers .

9. （5） Mary has a brother. His name is Jimmy. (合并为一句话)

   Mary has a brother .