He works in a theater.
He is an actor.
He puts out the fire.
He is a firefighter.
She works in a doctor's office.
She is a doctor.
She does sport.
She is an athlete.
He flies a plane.
He is a pilot.
She examines things.
She is a scientist.
He plays the guitar.
He is a musician.
He goes to space.
He is an astronaut.
He paints.
He is a painter.