Are they waiters?
No, they aren't.
Yes, they are.
Are they teachers?
No, they aren't.
Yes, they are.
Who's this?
He's a teacher
She's a teacher.
They are teachers.
Who's these?
She's a pupil.
He's a pupil.
They are pupils.
Who's this?
They are pupils.
She's a builder.
He's a builder.
Who's this?
He's a waiter.
They are waiters.
She's a waiter.
Are they pupils?
Yes, they are.
No, they aren't.
Are they vets?
Yes, they are.
No, they aren't.
Who's this?
He's a vet.
She's a vet.
They are vets.
Are they builders?
No, they aren't.
Yes, they are.