Since или for. Урок английского языка

1. Jane hasn't been to America sincefor 1981.

2. You haven't smoked sincefor two months.

3. I haven't worked sincefor a mounth.

4. My boss has been away sincefor half a day only.

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

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

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

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

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.