1Kristi;gloves. These are Kristi's gloves. They're her gloves.These gloves are hers.
2. Mother;apron.
This is mother's apron
It's her apron
This apron is hers
3. The peacock;tail.
This is peacock's tale
This is its tale.
This tale is its.
4. The roof;house.
This is the roof of the house
It's the house's roof
This roof is its (house's)