It is an apple
It isn't an apple.
I am a girl.
I'm not a girl.
She is a friend.
She isn't a friend
It is a school.
It isn't a school.
He is a teacher.
He isn't a teacher.
It is an eraser.
It isn't an eraser.
I am a cat.
I'm not a cat.
He is short.
He isn't short.
She is yellow.
She isn't yellow.
It is a tree.
It isn't a tree.
It is a bird.
It isn't a bird.
I am a boy.
I'm not a boy.
