2 has to
3 don't have to
4 doesn't have to
5 has to
6 have to
7 doesn't have to
8 have to
9 doesn't have to
10 has to
7
2 He must do his homework
3 You mustn't tell anyone.
4 We don't have to buy any eggs.
5 You mustn't let the dog sleep your bed.
6 You don't have to do the washing-up