Do they work in a supermarket?
Yes, they do.
Where does she work?
She works in a post office.
Does she work in an office?
No, she doesn't. She works in a post office.
Does she work in a post office?
Yes, she does.
Where does he work?
He works in a petrol station.
Does he work in a garage?
No, he doesn't. He works in a petrol station.
Does he work in a petrol station?
Yes, he does.
