Verb to be: Contractions

Fill in the blanks with contractions of the verb to be
AFFIRMATIVE
I am a student = a student
He is a student = a student
She is a student = a student
It is a dog = a dog
We are students = students
You are a student = a student
They are students = students		NEGATIVE
I am happy = not happy
He is happy = He happy
She is happy = She happy
It is happy = It happy
We are happy = We happy
You are a happy = You happy
They are happy = They happy