Since или for. Урок английского языка

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

2. We've lived here sincefor seventeen years.

3. I haven't worked sincefor a mounth.

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

5. She has been in hospital sincefor Monday.

6. They have been ill sincefor Monday.

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

8. He hasn't played the piano sincefor he was a boy.

9. These cherry trees have bloomed every spring sincefor 1980.

10. They've been in love sincefor three weeks.