must, mustn't, have to, needn't and don't have to

Most students in America___________ wear uniforms.

You _________see the film. It's fantastic. 

You ________worry about the dinner. We are not hungry. 

The metro station is closed. I _______ get a taxi.

Visitors _________ park their cars there.

Spanish children __________go to school for three months in summer. 

You can go to the party, but you ________be back before midnight.

You _________help me with the housework. I'll do it on my own.

English children __________stay at school till they are 16.

I __________ eat sweets. I am on a diet.

Sarah ____________use glasses, because she wears contact lenses.

We _________make so much noise at night.

 It's Monday tomorrow. I ________go to school again.

You _________ring the bell. I have a key.

 All mobile phones ________ be switched off during the take off.