Complete the sentences with can, could, might, may, should, must, have to. Sometimes you need the negative form.

Решение:

• 1. The phone is ringing, it must be Alex. (Это логическое предположение, основанное на факте звонка.)
• 2. You look sick, you should see a doctor. (Рекомендация, основанная на наблюдении.)
• 3. They don't have to drink coffee if they prefer tea. (Отсутствие необходимости, выбор.)
• 4. Somebody was calling last night, but I couldn't answer, I was asleep. (Невозможность действия из-за обстоятельств.)
• 5. She can't come to the meeting, she is out of the country now. (Физическая невозможность.)
• 6. Be careful. You must not/should not use your cell phone when you are driving. (Запрет или сильная рекомендация не делать что-либо.)
• 7. You could/might spend the day watching TV. Go and do something more productive. (Предложение или возможность, но с намеком на то, что это не лучший вариант.)
• 8. A: Do you know who's that girl sitting next to Sam? B: I have no idea but it could/might be his girlfriend. (Предположение о возможности.)
• 9. May/Can I use your laptop for an hour? (Просьба о разрешении.)
• 10. Karla can sing really well but she cannot/can't play any musical instrument. (Констатация факта отсутствия навыка.)
• 11. My father could fly a plane when he was younger. (Способность в прошлом.)
• 12. We must buy the ticket now if we want to watch the soccer match. (Необходимость действия для достижения цели.)
• 13. If you are planning to travel you must/will need to have a passport. (Строгая необходимость.)
• 14. Buy a lottery ticket. You might/could be lucky. (Возможность.)
• 15. Paula couldn't/wasn't able to go to the meeting last week. She was ill. (Невозможность действия в прошлом из-за обстоятельств.)