D. Choose the correct modal verb.
1. Children mustn’t/ needn’t dive into the river. It’s dangerous.
2. She shouldn’t / should eat sweets if she wants to lose weight.
3. You must/could be over 18 to drive a car.
4. Helen may/ must go on a tour next summer if her parents give their permission.
5. We could/ couldn’t sleep last night because of the storm.
6. All teens have to /might stay in school until they are sixteen years of age.
7. Must/may I come in?
8. I can’t/can speak Spanish very well because I didn’t learn it at school.
9. If your roommates are too noisy, you ought to/need to study at the student library. It’s quiet there.
10. Girls will cook everything for the party, so boys don’t have to/ mustn’t bring any food.
Complete the sentences with the correct form of can + verb.
1 You can (see) the photo on my mobile, here.
2 Could (we pay) by cheque?
3 What can (you do) in the college show?
4 I'm sorry, I can (not come) to your concert.
5 You can (use) a credit card almost everywhere.
6 can (he play) the drums?
7 It's a cat. It can (not talk)!
8 We can (not swim). There's no swimming pool in our town.
9 The baby can (not say) many words yet.
10 can (we get) a bus from here to the city centre?
11 The headmaster can (see) you in ten minutes.
12 Could (I text) you from Singapore?