1
2
3
100

Change it, using possessive 's:

 The book of my mother 

My mother's book

100

Bart/dog

Bart's dog

100

Boy/guitar

Boy's guitar

200

Change it, using possessive 's:

The dance of a boy

The boy's dance.

200

The birthday cake of the dog

The dog's birthday cake

200

Rapunzel has got a magic rubber

Rapunzel's  magic rubber

300

Change it, using possessive 's:

This cat has got a toy

The cat's toy

300

Cats/sunglasses

Cats's sunglasses

300

Minions have got cool trainers 

Minions' trainers

400

Patrick/snack

Patrick's snack

400

People/food

People's food

400

Parents/car

Parents' car

500

Change it, using possessive 's:

The girl has a coffee

The girl's coffee

500

Children/phones

Children's phones

500

Women/dresses

Women's dresses