Помогите пожайлуста очень надо!

1. She has been ill since last week.2. He has been known me since childhood.3. I have been trying to understand you for half an hour.4. He has been to Kyiv for three years. 5. She has been looking for her key since she came home. 6. They have been here since two o'clock.7. My sister has been sleeping for ten hours.8. We have been married since 1977. 9. How long have Mary and Ann known each other? 10. We haven't seen them for three months.11. His car is very old. He has had it for many years. 12. It has been snowing for four hours. Мое решение помогло? Выбери как лучшее!