Write down the questions according to the answers. (根据答句写问句)
1. Amy: _________________________________________________________
Alex: She is a student.
2. John: _________________________________________________________
Zhao Qiang: Yes, he likes riding a bike.
3. Sarah: ________________________________________________________
Mark: I am reading books.
4. Li Yun: ________________________________________________________
Zhang Hua: The hospital is in front of the bookstore.
5. Sarah: _________________________________________________________
Tom: That is a train.