____ _____ pencils?
No, they aren't.
____ _____ teachers?
Yes, they are.
____ _____ waiters?
No, they aren't.
____ _____ baloons?
Yes, they are.
____ _____ pupils?
Yes, they are.
____ _____ crocodiles?
No, they aren't.
____ _____ vets?
Yes, they are.
____ _____ lions?
No, they aren't.
____ _____ dogs?
No, they aren't.
____ _____ tigers?
Yes, they are.