把下列句子改成否定句.This ia my brother.It is his book.He is sad.He ha

This is not my brother.
It is not his book.
He is not sad.
He has not a bag.
They do not like red.
Mary and Amy are not sisters.
I do not have breakfast every morning.
Mary does not like math.
That is not my brother.
I am not happy.
She has not two sisters.
His favorite teacher is not Miss Li.
Tom does not get up at seven.
They do not go to school everyday.
They are not families.
Mr Smith is not my art teacher.

This isn't my brother.
It isn't his book.
He isn't sad.
He doesn't have a bag.
They don't like red.
Mary and Amy aren't sisters.
I don't have breakfast every morning.
Mary ...