1. His hands are dirty. He has worked been working on his car.
2. You look tired. Have you been sleeping? slept?
3. I'm ready for the exam. I have studied studied a lot.
4. That boring football match is just over. It has lasted lasted nearly 2 hours!
5. It's 9pm now. I have waited waited have been waiting here for half an hour!
6. I can't remember the last time I have won won have been winning a tennis match.
7. How long have you been working worked in your present job?
8. The garden is very untidy because the children have played played have been playing football all afternoon.
9. He's a novelist. So far, he wrote has written has been writing 10 novels.
10. Jack hasn't finished didn't finish repairing the computer yet.