If only people keep sending me bills! weren’t
don’t
shouldn’t
wouldn’t

We the game if we'd had a few more minutes.
won
might have won
will win
had won

If I can speak Spanish, I next year studying in Mexico.
had spent
would spend
will spend
would have spent

I’II tell Anna all the news if her.
I’ll see
I’m going to see
I shall see
I see