2 Underline the correct word. 1 You must/needn't stop at the red light. 2 Pilots have to/can't wear a uniform. 3 You mustn't/don't have to water the plants. I'll dothat. 4 He's ill. He must/has to see a doctor. 5 You mustn't/don't have to eat in the classroom. It isn't allowed. 6 He has to/can't do his homework every day. 7 Do I have to/Needn't I finish it today? 8 You mustn't/needn't wear a sweater. It's warm outside. 9 You mustn't/don't have to be late. It's an important meeting. 10 He can go out but he needs/has to be back by 10:00.

Решение:

• 1. You must stop at the red light. (Остановка на красный свет — это обязанность/правило.)
• 2. Pilots have to wear a uniform. (Ношение формы для пилотов — это требование, обязанность.)
• 3. You don't have to water the plants. I'll do that. (Говорящий предлагает взять на себя обязанность, значит, другому делать это не обязательно.)
• 4. He's ill. He has to see a doctor. (Болезнь подразумевает необходимость обращения к врачу.)
• 5. You mustn't eat in the classroom. It isn't allowed. (Есть в классе запрещено.)
• 6. He has to do his homework every day. (Это ежедневная обязанность.)
• 7. Do I have to finish it today? (Вопрос о необходимости выполнения действия.)
• 8. You needn't wear a sweater. It's warm outside. (Нет необходимости надевать свитер, потому что на улице тепло.)
• 9. You mustn't be late. It's an important meeting. (Опаздывать на важную встречу запрещено.)
• 10. He can go out but he has to be back by 10:00. (Возвращение к определенному времени — это обязательство.)

Ответ: 1. must, 2. have to, 3. don't have to, 4. has to, 5. mustn't, 6. has to, 7. have to, 8. needn't, 9. mustn't, 10. has to