Odpowiedź:
2 Whose keys are these?
They're Karol's keys.
3 Whose pendrives are those?
They're Maria's pendrives.
4 Whose purse is this?
It's Maria's purse.
5 Whose umbrella is that?
It's Karol's umbrella.
6 Whose headphones are those?
They're Maria's headphones.