1. 根据要求改写句子。

1. （1） Kate lies on the bed.(用at 8:00 pm yesterday改为过去进行时态)

   Kate on the bed at 8:00 pm yesterday.

3. （2） They were playing football then.(改为否定句)

   They football then.

5. （3） The book fell off the shelf.(用fall down改成同义句)

7. （4） Maomao was playing games at that time.(对划线部分提问)

   was Maomaoat that time?

9. （5） I was writing a letter at 10 o'clock yesterday.(改为一般疑问句)

   you a letter at 10 o'clock yesterday?