VD: Children don't have to/mustn't go to school on Sundays.
1. You had better/ ought take an umbrella. It's raining now.
2. She could/ can speak three languages when she was a girl.
3. He will be able to/ can help you in the future.
4.
Shall/Will we go for a walk? - That's a good idea!
Will/Shall you open the door for me?
5.
6. The visitors don't have to/ mustn't shout in the museums.
7. We don't have to/ mustn't be late for school.
8.
Student' don't have to/mustn't wear uniforms in this school. It's unnecessary.
9. People don't have to/ mustn't tease the animals in the zoo. It's forbidden.
10. You don't have to/ mustn't wait for me if you are in a hurry.