Unit Onewhat is your father?
?What is your father？?He is a cook.?What about your mother？?She is a doctor.
?Su Nan,what is your father??My father is a worker.?Is your mother a worker,too??No she isn't.She is a nurse.
?????What is she ?She is a bus driver .Is she your sister?Yes.Wow! I want to be a bus driver,too!