Obligations and Prohibitions

Frank ____ finish the reports today. The boss wants them next week.

In the UK, you ____ ride a moped when you're 16.

The rules say you ... use your hands when you're playing football.

We use ____ to say that something is not necessary.

________ study on Friday evening or can you come to my party?

Students ____ stay in the classroom in the break. They are allowed to go outside.

I ____ buy my girlfriend some flowers.

He really ____ revise! If he doesn't improve his marks, he ____ stay on the team.

There were only a few people in the queue, so we ____ wait for very long.

You ____ wear smart clothes: it's a very informal party.

She usually gets home from school at 6:30, but tonight she ____ stop at the shop first.

My brother works in a bar. He ____ wear a uniform, but he ____ work late nights and weekends.

John ____ wear a tie at work. He works for a serious company.

Which one is GRAMMATICALLY CORRECT?

Children ____ play with fire in the house. They can burn the house.

People ____ use their mobile phones in planes. The plane may crash.

Which one is GRAMMATICALLY CORRECT?

Before entering a foreign country, we ____ show our passports.

We ____ play football on the grass when we were children.

We use HAVE TO for ...

You can go, but you ____ return within 10 minutes.

The negative form of HAVE TO for I / YOU / WE / THEY is ____ .

Silvia ____ borrow her parents' car until she's passed her test.