Since или for. Урок английского языка

1. You haven't smoked sincefor two months.

2. We've lived here sincefor seventeen years.

3. I haven't worked sincefor a mounth.

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

5. They haven't visited us sincefor Christmas.

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

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

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

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

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