句子大变脸：按要求改写句子。
1. My father is a doctor. (对画线部分提问)
____________ ____________ your father?
2. There are three people in my family. (对画线部分提问)
____________ ____________ people are there in your family?
3. Can you spell these words? (作否定回答)
No, ____________ ____________.
