IV. Раскройте скобки, употребляя глаголы в форме Present Perfect. Обратите внимание на употребление предлогов for и since.

Решение:

1. I have lived here since 1999.
2. He has worked there since May.
3. They have been friends since they started college.
4. We have known him for three years.
5. They have lived 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 Russia last year and I have not seen him for (or since).
9. He has studied French for ten years.
10. My mother has worked in the factory for some years.
11. They have lived in Brazil since 1960.
12. I have not seen him since this Tuesday.
13. He has been in prison for five years.
14. She has not heard about them for almost a year.
15. I have known nothing about him for several months.