Is he a teacher?
No, he isn't. He is a builder.
Are they teachers?
No, they aren't. They are vets.
Are they waiters?
No, they aren't. They are pupils.
Are they pupils?
Yes, they are.
Are they waiters?
Yes, they are.
Is he a waiter?
Yes, he is.
Are they vets?
Yes, they are.
Is he a waiter?
No, he isn't. He is a builder.
Is she a vet?
No, she isn't. She is a teacher.
Is he a builder?
Yes, he is.
Is she a teacher?
Yes, she is.