1. Victor has been working for an hour and a half.
2. Robert has been watching TV for two hours and a half.
3. Mr Cook has been fishing for three hours.
4. Jenny has been decorating the hall for half an hour.
5. Mendy has been making a dress for half an hour.
6. The boys have been running for half an hour.
7. The Morgans have been driving for an hour and a half.
8. The children have been playing footbal for an hour.
9. Jim has been shopping for half an hour.
10. I have been waiting for you for half an hour.