Since или for. Урок английского языка

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

2. We've lived here sincefor seventeen years.

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

4. They have been ill sincefor Monday.

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

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

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

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

9. New ideas have been put into practice sincefor he was elected our leader.

10. Joe and Josephine have been going out together sincefor Valentine's Day.