Поставьте глаголы, стоящие в скобках, в Present Perfect, выбрав for или since. 1. I (to live) here (for/since) 1999.

1. I have been living here since 1999. 2. He has been working there since May. 3. They have been friends since they started college. 4. We have known him for three years. 5. They have been living in our house for two years. 6. She has been ill since Friday. 7. I have not been in London since I was a child. 8. I left Kyiv last year and I have not seen him since. 9. He has been studying French for ten years. 10. My mother has been working in the factory for some years. 11. They have been living in Brazil since 1960. 12. I have not seen him since this Tuesday. 13. He has been in prison now for five years. 14. She has not heard about them for almost a year. 15. I have known nothing about him for several months.