1. Have you finished the project? No i haven't
2. My mother hasn't gone out with his friend
3. The cleaner hasn't cleaned the windows
4. Have you washed the dishes? Yes i have
5. My son hasn't taken the pills
6. My mother hasn't done the shopping
7. Julia has played snowball with her friends
8. Dorothy and Mark haven't painted the fences
9. Have they visited their uncle? No, they haven't
10. They haven't listened to their teacher
11. My brother hasn't had a shower
12. Have the kids done their homework?