Task 1. Complete the sentences with the correct modal verb (must / can / should / may)
1. I have a glass of water?
2. Bird be known by its song.
3. He is coming here so that they discuss it without delay.
4. I have some free time. I help her now.
5. I drive Susan's car when she is out of town.
6. Anyone become rich and famous if they know the right people.
7. You go to this party. It's very important.
8. It's late. You go to bed.
9. He have told me about it himself.
Task 2. Complete the sentences with the correct modal verb.
1. It can /could / couldn’t rain tomorrow.
2. You don’t have to /might not/mustn’t use your mobile phone in class.
3. You can’t have / don’t have to /mustn’t study at the weekends, except when you have exams.
4. You may not / might not /needn’t Everything will be OK.
5. You couldn’t / mustn’t / shouldn’t eat so many hamburgers. They're not good for you.
6. Diana looks happy. She can /can have /must have heard some good news.
7. I can’t /may not /might not have left my mobile phone at school on Friday afternoon – I had it on Friday night.

Task 3. Write the sentences again without changing the meaning. Use one of the modal verbs in brackets.
1. It’s possible Kate saw him. (must / may / can)
Kate
2. I am certain John has got lost. (should / could / must)
John
3. My advice is that you stop. (should / must / could)
You
4. Perhaps they went to London. (must / can / might)
They
5. I am sure Mary is French. (can / must / could)
Mary

Task 4. Complete the sentences with a suitable modal verb. Use must, don’t have to, might, should, must have, mustn’t, can’t have and shouldn’t.
1. You eat more vegetables. They're good for you.
2. You drive on the pavement. It's illegal.
3. You say that. It's not nice.
4. I go to work tomorrow because it's a public holiday.
5. I buy this CD, but I'm not sure.
6. He's not here. He gone out.
7. She didn't study enough. She passed her exam.
8. You be 18 before you can buy alcohol.