Is she playing the guitar?
Yes, she is.
Is he playing the guitar?
No, he isn't.
Are they listening to music?
Yes, they are.
Is he watching TV?
Yes, he is.
Are they playing the guitar?
Yes, they are.
Are they doing homework?
Yes, they are.
Are they watching TV?
No, they aren't
Are they listening to music?
No, they aren't
Are they eating?
No, they aren't
