She's a nurse.
He's a driver.
—What's she?
—She's a doctor.
Lingling: What's your father?
Peter: My father is a policeman. And your father?
Lingling: He's a doctor. And what's your mother?
Peter: She's a teacher. And your mother?
Lingling: She's a nurse. What's your sister?
Peter: She's a driver. And your brother?
Lingling: He's a postman.