Are they cooking?
Yes, they are
Is she dancing?
Yes, she is
Are they playing volleyball?
Yes, they are
Is he eating?
Yes, he is
Is he playing the guitar?
No, he isn't
Is he playing the guitar?
Yes, he is
Are they playing basketball?
No, they aren't
Is he playing games?
Yes, he is
Is he eating?
Yes, he is
Is he swimming?
No, he isn't
Are they playing football?
No, they aren't
Are they going shopping?
Yes, they are
Are they playing the piano?
Yes, they are
Is he playing computer games?
No, he isn't