Bonjour es-que qu'elle qu'un pourrais m'aider pour mon exercice 3

1. who's it house?
2. who's are this keys?
3. who's this bag?
4. who's this bedroom?
5. who's this mobile phone?

1) Who's the house?
2) Who's are the keys?
3) Who's the bag ?
4) Who's the bedroom ?
5) Who's this mobile phone ?