Since или for. Урок английского языка

1. We've been friends with Fred sincefor decades.

2. We've lived here sincefor seventeen years.

3. We've been together only sincefor a few days.

4. She has been in hospital sincefor Monday.

5. You have been watching TV sincefor hours.

6. Jane hasn't been back to Hungary sincefor last year.

7. He's been working in the field sincefor early this morning.

8. They have been raising horses and cows on their farm sincefor many years.

9. He worked at that company sincefor ten years before he retired.

10. They've been teaching here sincefor quite a long time.