Odpowiedź:
1. I must study this weekend. It's my obligation as a student.
2. You mustn't feed the animals in the zoo. It's forbidden!
3. I have to make my bed every morning. I must help my parents at home.
4. You should do exercise every day. It's good for you.
5. You shouldn't listen to loud music. It's bad for your ears!
6. You have to help me now. Dad helped me this morning.
7. They must study harder if they want to pass their exams.
8. You mustn't use your mobile phone in class.
9. She doesn't have to wear a uniform at school. She can wear jeans.
10. You shouldn't eat fast food. It's bad for you!
