Since или for. Урок английского языка

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

2. We've lived here sincefor seventeen years.

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

4. We haven't seen Mary sincefor the party.

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

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

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

8. Jane has worked here sincefor two weeks already.

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

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