Ответ:

1. You must do your homework every day. 2. You mustn't be rude to your parents. 3. You must worry about the exam. ( Ты должен / не должен беспокоиться об экзамене. Я поставила - должен. По моему два варианта можно использовать. Вам решать ) 4. We must buy some flowers for the party. 5. You mustn't drink too much coffee. 6. You must clean your teeth every day. 7. You mustn't drive fast. 8. You must drink a cup of milk every day. 9. You must exercise three times a week. 10. You mustn't eat too many sweets.

Объяснение: