I am a photographer. Do I take pictures?
Yes, I do.
Yes, she does.
Yes, you do.
You are an veterinarian. Do you help sic people?
No, I don't. I help sick animals.
She is a student. Does she teach?
No, she doesn't. She studies.
He is a zookeeper. Does he take care of animals?
Yes, he does.
You are a doctor. Do you help sick animals?
No, I don't. I help sick people.
He is a pilot. Does a pilot fly cars?
No, He doesn't. He flies airplanes.
You are a car mechanic. Do you make cars?
No, I don't. I fix cars.
He is a baker. Does he sell books?
No, he doesn't. He bakes bread.
You are an astronomer. Do you study history?
No, I don't. I study planets.