Are you a doctor? (Negative form)
No, I'm not.
Is she your friend? (Affirmative form)
Yes, she is.
Are they hungry? (Negative form)
No, they aren't.
Is he thin? (Affirmative form)
Yes, he is.
Are ____ a student? Yes, I am.
you
Is Helen sad? (Affirmative form)
Yes, he is.
Is it tired? (Negative form)
No, it isn't.
Is she hungry? (Affirmative form)
Yes, she is.
