Hello :)
1: Where's Mrs Williams's cat?
2: Where are Ken's tennis shoes?
3: Where are your father's keys?
4: Where are Jennie's glasses?
5: Where are the boys's dogs?
6: Where's the tourist's passport?
7: Where's is John's new pen?
8: Where's your brother's English dictionnary?
9: Where are the children's gloves?
10: Where's the actress's ring?