1. － _________ they _________ (do) their homework in the classroom?
    — Yes, they are.
2. There _________ (be) some people in the park.
3. — How much bread do you want?
    — I want two _________ (piece) of bread.
4. I find the girl _________ (dance) in the room now.
5. The women are the _________ (children) teachers.