单项选择题
What is good about living close to the city center（）
A．Traveling by bus or car. B．Living in an expensive way. C．Enjoying city life. D．Finding places to live in.
A．He is in hospital because of an operation. B．His mother is ill, so he is at home, looking after her. C．He is in hospital, taking care of this mother. D．He will go to hospital to see the doctor.
A．Dentist. B．Physicist. C．Physician. D．Surgeon.