I've come back.
You've come back.
He's come back.
She's come back.
It's come back.
We've come back.
You've come back.
They've come back.
Negative:
I haven't come back.
You haven't come back.
He hasn't come back.
She hasn't come back.
It hasn't come back.
We haven't come back.
You haven't come back.
They haven't come back.
Question:
Have I come back?
Have you come back?
Has he come back?
Has she come back?
Has it come back?
Have we come back?
Have you come back?
Have they come back?
Short answer
Yes, I have / No, I haven't
Yes, you have / No, you haven't
Yes, he has / No, he hasn't
Yes, she has / No, she hasn't
Yes, it has / No, it hasn't
Yes, we have / No, we haven't
Yes, you have / No, you haven't
Yes, they have / No, they haven't
