2. Do Toby and Harry look at the stairs?
3. Does Julie make model castles?
4. Do Toby and Harry play football?
5. Does Julie listen to music?
6. Do Toby and Harry watch TV?
Как отвечать не понятно, но объясню:
Если Toby and Harry, то No, they don't или Yes, they do.
Если Julie, то No, she doesn't или Yes, she does