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 worked sincefor a mounth.

4. They haven't visited us sincefor Christmas.

5. She has been in hospital sincefor Monday.

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