Ответ:

1. Have you been running?
2. She has already been in Istanbul for a week.
3. Jane run faster than Margaret.
4. He helped himself with a piece of cake.
5. They live somewhere near the bus station.
6. He looked angry. Had he been arguing?
7. I have been waiting for 45 minutes.
8. He is cleaning the house at the moment.
9. She had written 3 books. Before she became famous.
10. He speaks so fast that i can't/couldn't even understand him.