Odpowiedź:
1. What have you been doing?
2. No, it has stopped
3. I've lost my mobile phone. Have you seen it?
How long have you been playing the piano?
4. He has spoken to me three times about that project and I still don't understand what he wants.
6. Really? How many books has he written?
7. You're out of breath. Have you been running?
8. He has been painting that flat for a week now and he still hasn't finished yet.
9. Have you ever worked for him?
10. Look! Somebody has taken my backpack.
Wyjaśnienie:
