Possessive 's
The cat of the kid.
The kid´s cat
This is Sara. _____ book is new.
Her
This is my father. Her name is John.
Incorrect
The computer's teacher is there.
Incorrect.
The teacher's computer is there.
This is Kate. _____ cat is white.
Her
The computer of the teacher.
The teacher's computer.
I'm Tom. _____ pencil is blue.
His
He is my brother. His name is Max.
Correct.
Susan's cat is up there!
Correct
The ball of Ben.
Ben's ball
The kids of Marco.
Marco's kids.
We are students. _____ classroom is big.
Our
She is my sister. His name is Emma.
Incorrect
Samuels restaurant is awezome.
Incorrect.
Samuel's restaurant is awezome.
We are classmates. _____ teacher is Mr. Green.
Our
The toy of the dogs.
The dogs' toy.
They are my friends. _____ teacher is nice.
Their
Manuel has two brothers. Our names are Oscar and Ivan.
Incorrect.
The kids's toys are here.
Incorrect.
The kids' toys are here.
The car of my friend is nice.
My friend´s car is nice.
The cat of Marco.
Marcos's cat.
We want ___________ ball back!
Our.
Larry has a cat. Its name is Zack.
Correct.
The teachers´computers are in the lab.
Correct
The bike of Lucy.
Lucy's bike