根据要求改写句子。
1. Amy has a new coat.（改为一般疑问句）
2. There are some purple flowers in the park.（对划线部分提问）
3. There are some tall buildings in the city.（改成疑问句）
4. Is there a clean river?（作否定回答）
5. There is a mountain near my village.（改成复数）
1. Does Amy have a new coat?
2. What's in the park?
3. Are there any tall buildings in the city?
4. No, there isn't.
5. There are many mountains near my village.