Since или for. Урок английского языка

1. I haven't met Jill sincefor the end of the school.

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

3. I haven't slept sincefor 48 hours.

4. I've read two books sincefor the weekend.

5. She has been in hospital sincefor Monday.

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

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

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

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

10. Joe and Josephine have been going out together sincefor Valentine's Day.