To Be : Is, Am, Are

I am a teacher.
I'm a teacher.
Are you a teacher?
Yes, I am.
Yes, I'm.
Yes, I am a teacher.
Yes, I'm a teacher.
No, I am not.
No, I'm not.
No, I'm not a teacher.

He is a student.
He's a student.
Is he a student?
Yes, he is.
Yes, he is a student.
No, he is not.
No' he isn't.
No, he is not a student.
No, he isn't a student.

She is an engineer.
She's an engineer.
Is she an engineer.
Yes, she is.
Yes, she is an engineer.
Yes, she's an engineer.
No, she is not.
No, she isn't.
No, she is not an engineer.
No, she's not an engineer.

We are computer programmers.
We're computer programmers.
Are you computer programmers?
Yes, we are.
Yes' we are computer programmers.
No, we are not.
No, we aren't.
No, we are not computer programmers.
No, we aren't computer programmers.

They are business leaders.
They're business leaders.
Are they business leaders?
Yes, they are.
Yes, they are business leaders.
No, they are not.
No, they aren't.
No, they are not business leaders.
No' they aren't business leaders.

It is a notebook computer.
It's a notebook computer.
Is it a notebook computer?
Yes, it is.
Yes, it is a notebook computer.
Yes, it's a notebook computer.
No, it is not.
No, it isn't.
No, it is not a notebook computer.
No, it isn't a notebook computer.