按要求改写下列句子。
1. There are some boys in the playground. (改为一般疑问句)
    _________  _________  _________ boys in the playground?
2. Is this the art room in your school?(作肯定回答)
    _________,_________  _________.
3. There are two toilets in the park. (对划线部分提问)
    _________  _________  _________  _________  _________ in the park?
4. Please feed the chicken. (改为否定句)
    __________  __________ the chicken, please.
5. There are some boats on the lake. (对划线部分提问)
    __________ on the lake?