句型转换。

1. The dress cost so much that she didn't buy it. (同义句)

    The dress cost            much            buy it.

2. My parents will go to America in two weeks. (对划线部分提问) 

                          will your parents go to America?

3. People use knife for cutting things. (改为被动语态)

    Knife                       for cutting things.

4. Tom must be in the office (改为表示否定推测的句子)

    Tom                       in the office.

5. Lily don't know how to do well. (用虚拟条件句改写)

    If I           her, I            do it well.

医疗急救中心的救护车和分站在数量上有什么要求？