1. 句型转换

1. （1） They are doing some cleaning. (改为一般疑问句)
   

   they cleaning?
   

3. （2） They are having a party in the classroom now. (对划线部分提问)
   

   are they a party now?

5. （3） Tom often walks to school. (改为否定句)
   

   Tom often to school.
   

7. （4） The girl cleans the kitchen every day. (用now改为现在进行时)
   

   The girl the kitchen now.
   

9. （5） Xu Li is eating a red apple. (对划线部分提问)
   

   is Xu Li?