按要求改写句子。

1. There are some old nurses in the hospital. (改为单数形式) 

    There _______ _______ old nurse in the hospital.

2. There is only one reading room in the school. (对划线部分提问)

     _______ _______ reading rooms in the school?

3. The flowers are in the park. (对划线部分提问)

     _______ _______ the flowers?

4. They are some birds in the tree. (对划线部分提问)

     _______ _______ in the tree?

5. I go to school at seven thirty. ( 改为一般疑问句)

     _______ _______ go to school at seven thirty?