Since или for. Урок английского языка

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

2. You haven't smoked sincefor two months.

3. I haven't worked sincefor a mounth.

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

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

6. She has been in hospital sincefor Monday.

7. You have been watching TV sincefor hours.

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

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

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