V-3 1. children … help their parents. 2. you … walk the dog, because i can’t do it. i’m busy now. 3. you … be noisy. your father is sleeping. 4. you … help me. i’m your brother. 5. he is late. he … run to school. 6. you … answer my question if you don’t want to. 7. i … go shopping to buy some food for a picnic. 8. you … tell me the truth. 9. i … look after my little sister because mum is out. 10. i … speak english to my guest. he doesn’t understand russian.

1. Children must help their parents.

2. You must walk the dog, because I can’t do it. I’m busy now.

3. You mustn't be noisy. Your father is sleeping.

4. You must help me. I’m your brother.

5. He is late. He has to run to school.

6. You have to answer my question if you don’t want to.

7. I have to go shopping to buy some food for a picnic.

8. You must tell me the truth.

9. I must look after my little sister because mum is out.

10. I have to speak English to my guest. He doesn’t understand Russian.