since
b) for
c) ----
1. My parents have worked for this company ….. 1993.
2. My elder brother left school ….. three years ago.
3. We have known the Smiths ….. they moved to Bridge Street.
4. John has played in the school team ….. two years.
5. Mr. Dave was Jane’s teacher ….. last year.
6. The team hasn’t lost matches ….. several years.
7. Tom has been ill ….. a week.
8. They have had a new car …… January.
9. I slept well ….. last night.
10. We’ve known each other ….. a long time.
11. They lived in Australia ….. one year.
12. I haven’t seen him ….. last night.
13. Once I studied the guitar ….. three years.
14. It’s ages ….. last meal , and I very hungry.
15. That theatre was closed ….. many years.