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. They have been ill sincefor Monday.

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

7. He's been working in the field sincefor early this morning.

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

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

10. They've been teaching here sincefor quite a long time.