Wstaw who i whose

(To jest nauczyciel, który zgubił torbę dwa dni temu)

This is the teacher --- who whose lost a bag two days ago.

(To jest nauczyciel, którego torbę wczoraj znalazłeś)

This is the teacher --- who whose bag you found yesterday.

Chłopiec który tam stoi to ten którego psa chciałeś kupić.

The boy --- who whose is standing there is the one whose dog you wanted to buy.

(Spotkałem kolegę, którego siostra miała kiedyś zajęcia z niemieckiego z nami)

I met a friend --- who whose sister used to have German classes with us.

(Spotkałem siostrę mojego kolegi  która miała kiedyś zajęcia z niemieckiego z nami)

I met my friend's sister  --- who whose used to have German classes with us.

Do you remember that teacher --- who whose used to give us difficult tests at school?

Do you remember that teacher --- who whose tests where difficult.

Mr K shouted at M --- who whose lives in Brzezie.

Mr K shouted at M --- who whose comments were both infuriating and irritating.

My father is a man --- who whose job is both very hard and rewarding (przynoszący satysfakcję)

My father is a man --- who whose has got both hard and rewarding job