Grammar: Unit 5: Fit and well

You .......... wear a seat belt in a car. It's the law.

You .......... use your phone in the exam room. It's not allowed.

Tomorrow is Friday, so we .......... get up early. There's no school.

You look tired. You .......... go to bed early tonight.

I .......... remember to call my grandmother tonight. It's her birthday.

If you want to get fit, you .......... try swimming. It's great exercise.

When I was five, I .......... swim. I learnt when I was ten.

Yesterday I .......... stay at home and look after my little brother because Mum was at work.

The museum was free, so we .......... pay for tickets.

My grandfather .......... speak three languages when he was young.

Which sentence means 'It is not necessary'?

Which sentence means 'It is not allowed'?