Is she catching the ball?
No, she isn't.
Is he playing piano?
Yes, he is.
Is she dancing?
Yes, she is.
Are they playing tennis?
No, they aren't.
Are they playing soccer?
Yes, they are.
Are they playing video games?
Yes, they are.
Is he hitting a ball?
Yes, he is.
Is he painting?
Yes, he is.
Is he skating?
Yes, he is.
Is she hitting a ball?
No, she isn't.