WELCOME, WELCOME, WELCOME!!! MORE WELCOME THAN EVER!

This is the second time I create this post. I have no clue what happened to the one I uploaded a couple of days ago.

Well, this is a must! A way I love to start my 2nd Bach year: Using music and this song full of energy to encourage you to start working and learning English in what is going to be " an interesting" year".

So we will start singing and hopefully will finish the same way. 

Can you fill in  the blanks?

Do you know the meaning of all the missing words?

At first I was afraid, I was petrified
Kept _______ I could never live without you by my side
But then I spent so many nights thinking how you did me wrong
And I _______ strong
And I learned how to get along
And so you're back
From outer space
I just walked in to find you here with that sad look upon your face
I should _______ _______  that stupid lock, I should _______ _____   you leave your key

If I'd known for just one second you'd be back to bother me

Go on now, go, walk out the door
Just turn around now
'Cause you're not welcome anymore
Weren't you the one who tried to hurt me with goodbye
Do you think I'd  ___________
Did you think I'd lay down and die?

Oh no, not I, I will survive
Oh,______ _____ ______ I know how to love, I know I'll stay alive
I've got all my life to live
And I've got all my love to give and I'll survive
I will survive, hey, hey

It took all the strength I had not to _______   __________
Kept trying hard to _______ the pieces of my broken heart     
And I spent oh-so many nights just feeling sorry for myself
I used to cry
But now I ________my head up high and you see me
Somebody new
I'm not that chained-up little person and still in love with you
And so you _______ _______dropping in and just expect me to be free
Well, now I'm saving all my lovin' for someone who's loving me
Go on now, go, walk out the door
Just turn around now
'Cause you're not welcome anymore
Weren't you the one who tried to break me with goodbye
Do you think I'd crumble
Did you think I'd lay down and die?

What is the song about? 

How did  the protagonist of the song feel after  the breakup?

Has she changed? In what sense?

How many different tenses can you see in this post?