Am I your best friend? Yes, you are / No, you aren’t
Is he in the classroom? Yes, he is / No, he isn’t
Is she your sister? Yes, she is / No, she isn’t
Are we ready for the game? Yes, we are / No, we aren’t
Are they happy? Yes, they are / No, they aren’t
Is it your book? Yes, it is / No, it isn’t
Am I right? Yes, you are / No, you aren’t
Are you a student? Yes, I am / No, I am not
Are we late? Yes, we are / No, we aren’t
Are they here? Yes, they are / No, they aren’t