Have to / don't have to

1 . You ____________________ ____________________ wear your uniform .
2 . She ____________________ ____________________ work hard .
3 . They ____________________ ____________________ study for the exam .
4 . He ____________________ ____________________ clean the house .
5 . I ____________________ ____________________ do my homework .
6 . It ____________________ ____________________ sleep in the sofa .
7 . We ____________________ ____________________ feed our pets .