We can go to bed after 10 p.m.
We have to go to bed before 10 p.m.
We don't have to go to bed before 10 p.m.
We have to stay at home.
We have to go to the park.
We don't have to go to the park.
You have to cross the road here.
You can cross the road here.
You have to cross the road in a different place.
I can't do my homework tomorow.
I can do my homework tomorrow.
I have to do my homework tomorrow.
We have to be at school before 9.00.
We can come to school after 9.00 if we want. It's OK.
We don't have to be at school before 9.00.
She doesn't have to cook breakfast on Sunday mornings.
She can cook breakfast on Sunday mornings if she wants.
She has to cook breakfast on Sunday mornings.
I have to eat a burger.
I don't have to eat a burger if I don't want it.
I have to eat a sandwich.
We don't have to wear shorts to our PE lessons.
We have to wear shorts to our PE lessons.
We have to wear trousers to our PE lessons.
We have to walk our dog on a leash.
We don't have to walk our dog on a leash.
We can walk our do on a leash or without it.
We must bring food from home.
We have to buy food and drinks at the cafe.
We don't have to buy food or drinks at the cafe.
Tom has to wear uniform to school.
Tom doesn't have to wear uniform to school.
Tom can wear uniform to school.
We are 15. We can't come with parents.
We are 15. We don't have to come with our parents.
We are 15. We have to come with our parents.
