Is it a driver? (+)
Yes, it is a driver.
Are you a student? (+)
Yes, I am a student.
Is it a waiter? (+)
Yes, it is a waiter.
(?) YOU / DENTIST
Are you a dentist? / Are you dentists?
Is he a scientist? (-)
No, he isn't a scientist.
Is she a farmer? (+)
Yes, she is a farmer.
(?) IT/ COOK
Is it a cook?
(?) THEY / FIREFIGHTER
Are they firefighters?
(?) HE / MECHANIC
Is he a mechanic?
Are you singers? (+)
Yes, you are singers.
(?) SHE / VET
Is she a vet?
Are we doctors? (+)
Yes, we are doctors.
(?) WE / ENGINEER
Are we engineers?
Is he a cook? (+)
Yes, he is a cook.
Is she a vet? (-)
No, she isn't a vet.
Is he a photographer? (+)
Yes, he is a photographer.
Are you a teacher? (-)
No, I am not a teacher.
Are they lawyers? (-)
No, they aren't lawyers.
Is she a farmer? (-)
No, she isn't a farmer.