Am I a doctor? — Yes, I am.
Are you a doctor? — Yes, you are.
Is he a doctor? — Yes, he is.
Is she a doctor? — Yes, she is.
Is it a doctor? — Yes, it is.
Are we doctors? — Yes, we are.
Are they doctors? — Yes, they are.
Am I a student? — Yes, I am.
Are you a student? — Yes, you are.
Is he a student? — Yes, he is.
Is she a student? — Yes, she is.
Is it a student? — Yes it is.
Are we students? — Yes, we are.
Are they students? — Yes, they are.
Are we friends? — Yes, we are.
Are they friends? — Yes, they are.
Are you friends? — Yes, you are.