Ответ:

1.

Does he take photographs? No, he doesn't.

Is he taking a photograph? He's having a bath.

What is he doing? He's having a bath.

2.

Is she driving a bus? No, she isn't.

Does she drive a bus? No, she doesn't.

What is she doing? She's playing the piano.

3.

Does he clean windows? Yes, he does.

Is he cleaning a window? He's cleaning a window.

What is he doing? He's cleaning a window.

4.

Are they teaching? No, they aren't.

Do they teach? No, they don't.

What do they do? They are watching TV.