1. Stephen is studying for a cardiology exam
2. Delia has been working since 9 a.m.
3. Sally has been rowing for 10 minutes
4. Phyllis has been putting on make-up for 30 minutes
5. Quasim Khan has been driving since 7 a.m.
6. Andrew was a professor since 2000
7. Diego has completed in the local ice-dance competition for 7 years
8. Diego won his first prize 4 years ago
9. Marry Ross has been a farmer for 7 years
10. Mr.Patterson has been having a meeting for 2 hours and 15 minutes
