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. I haven't slept sincefor 48 hours.

4. We've lived here sincefor seventeen years.

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

6. You have been watching TV sincefor hours.

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

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

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

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