1. B)根据括号内的要求完成下列各题，每空一词(含缩略形式)。

1. （1） —Can we listen to music in the library?（补全否定答语)
   

   —No， ．

3. （2） Rick and his sister are playing computer games． (改为否定句)
   

   Rick and his sister computer games．

5. （3） You can't wear a hat in class．  (改为祈使句)
   

     a hat in class．

7. （4） Mike is riding a bike in the park．(对划线部分提问)
   

     is Mike in the park?

9. （5） I like elephants because they are very interesting ．     (对划线部分提问)
   

      like elephants?