Odpowiedź:
1. Daria and her friends were playing voleyball.
2. Antek was listening to music on his smartphone.
3. Natalia was reading a book about castles.
4. Peter wasn't taking a picture of his cat.
5. I was watching a nature documentary about elephants.
6. My friend was dancing to techno music.
7. My friend wasn't talking on the phone.