Ответ:
- I have to do it tonight. It's urgent!
- You don't have to water the plants. I've done it.
- Do you have to leave so early?
- He has to go to school. He's ill.
- You have to pay £10 to become a member.
Проверка за 10 секунд: have to, don't have to, have to, has to, have to
Уровень Эксперт: Have to выражает необходимость, обусловленную внешними обстоятельствами.