Is he flying a plane?
No, he isn't. (He's driving a bus.)
Are they swimming right now?
No, they aren't. (They're walking)
Is your mom watching TV now?
No, she isn't. / Yes, she is.
What is he doing right now?
He's sleeping.
What's the dog doing?
It's getting a ball.
What's he doing?
He's catching a football.
