1st Bach: Key to modal verbs

You are obliged to be at home by twelve.
- You have to be/must be at home at twelve.
It is necessary for you to sleep enough hours to keep healthy.
- You need sleep/You have to sleep enough hours to keep healthy.
She is capable of playing the piano.
- She can play the piano.
Maybe we go to the countryside tomorrow.
- We may/might go to the countryside tomorrow.
We are obliged to listen carefully.
- We must/have to listen carefully.
It isn´t necessary for you to comb her hair. I have already done it.
- You don't need to/don't have to comb her hair...
There is no need for you to take your umbrella. It isn´t raining.
- You don't need to/don't have to take your umbrella...
There was no need for her to bring the shopping herself. They would bring it late for her.
- She didn't have to/need to bring the shopping herself...
It isn´t necessary to pay the food. It is free.
-You don't have to/don't need to pay for the food. It is free.
It is banned to touch the goods.
- You mustn't touch the goods.
It is forbidden to play loud music after ten.
- You mustn't play loud music after ten.
They don´t let her talk to him.
- She mustn't talk to him.
I advise you to eat healthy.
-You should eat healthy.
It isn´t a good idea to break your promise.
- You shouldn't break your promise.
If I were you I would go to the doctor.
- You should go to the doctor.
I think it would be good for you if you didn´t drive so fast.
You shouldn't drive so fast.