Since или for. Урок английского языка

1. We have received no news sincefor 5:30 pm.

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

3. They haven't visited us sincefor Christmas.

4. She has been in hospital sincefor Monday.

5. They have been ill sincefor Monday.

6. I haven't talked to him sincefor last week.

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.