1 .My dad -- start work at eight o'clock.
a has to b have to c should
2 .remember to finish my homework
a doesn't have to b must c shouldn't
3. get up at six o'clock on Mondays.
Thate Mondays!
a mustn't b have to chas to
4. You be late. It's rude.
a don't have to b must c shouldn't
5 .We leave now. We can leave later.
a mustn't b should c don't have to