She is a nurse
police officer / policeman
pupil
She is an office worker
on a farm
at an office
Does he work at an airport?
Yes, he does
at a nursing home
He is a farmer
at a police station
nurse
She is an actor
gardener
She works at an office
doctor
She works at a school
She is a teacher
He works at a police station
worker
farmer
She works at a nursing home / at a hospital
at a school
at a hospital
Does he work at a bank?
No, he doesn't
He works at a fire station
teacher
He is a police officer
office worker
She works on a farm
actor
firefighter
at a factory
He is a worker / a builder
He works at a factory
Does she work at a zoo?
Yes, she does
at a fire station