Since или for. Урок английского языка

1. You haven't smoked sincefor two months.

2. I haven't worked sincefor a mounth.

3. She has been in hospital sincefor Monday.

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

5. Dinosaurs have been extinct sincefor over 60 million years.

6. These cherry trees have bloomed every spring sincefor 1980.

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

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.