Are they in the office? Yes, they are.
Do they have lunch in the office? Yes, they do.
Have they got an office in London? Yes, they do.
Do they work in the office? Yes, they are.
Does she work in the office? Yes, she does.
Is she in the office? Yes, she is.
Has she got a computer in the office? Yes, she has.
Does he go to the office? Yes, he does.
Do they like his office? Yes, they do.
Does she clean the office? Yes, she does.