Does he take photographs?
Yes, he does.
Is he taking a photograph?
No, he isn't.
What is he doing?
He's having a bath.
Does she drive a bus?
Yes, she does.
Is she driving a bus?
No, she isn't.
What is she doing?
She's playing the piano.
Does she clean windows?
Yes, he does.
Is he cleaning a window?
Yes, he is.
What is he doing?
He is cleaning a window.
Do they reach?
Yes, they do.
Are they teaching?
No, they aren't.
What are they doing?
They are watching TV.
