1. I have been working all morning.
2. My father has been working for Orange for 2 years.
3. She has been driving for hours.
4. They have been talking since you arrived.
5. It has been snowing since last night.
6. Mother has been chopping onions, that's why her eyes are red.
7. The spy hasn't been sleeping in hours.
8. The students have been writing the test for twenty minutes.
9. How long have you been waiting?
10. This man has been selling newspapers for half an hour.
