1. 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. (8 points) 1. You drive on the pavement. It's illegal.
2. You say that. It's not nice.
3. I go to work tomorrow because it's a public holiday.
4. I buy this CD, but I'm not sure.
5. He's not here. He gone out.
6. She didn't study enough. She passed her exam.
7. You eat more vegetables. They're good for you. 8. You be 18 before you can buy alcohol.

1. You mustn't drive on the pavement. It's illegal.
Explanation: The use of "mustn't" emphasizes that it is not allowed to drive on the pavement.

2. You shouldn't say that. It's not nice.
Explanation: The use of "shouldn't" suggests that it is not advisable to say something that is not nice.

3. I don't have to go to work tomorrow because it's a public holiday.
Explanation: The use of "don't have to" implies that there is no obligation to go to work because it is a public holiday.

4. I might buy this CD, but I'm not sure.
Explanation: The use of "might" indicates that there is a possibility of buying the CD, but the decision is not definite.

5. He can't have gone out.
Explanation: The use of "can't have" suggests that it is highly unlikely that he has gone out.

6. She must have not passed her exam.
Explanation: The use of "must have" implies that it is a logical conclusion that she did not pass her exam, based on the fact that she didn't study enough.

7. You should eat more vegetables. They're good for you.
Explanation: The use of "should" suggests that it is advisable to eat more vegetables because they are beneficial for one's health.

8. You must be 18 before you can buy alcohol.
Explanation: The use of "must" indicates that it is a requirement to be 18 years old in order to purchase alcohol.