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. We've lived here sincefor seventeen years.

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

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

6. Jane has worked here sincefor two weeks already.

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

8. John and Bob have been working on this project sincefor five months already.

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

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