Here/hear
Here I am.
I can hear you.
They're/their/there
They're (they are) almost here.
It's their car, not yours.
Your car is over there.
Your/you're
You're (you are) going home today.
Your pizza is ready.
To/too/two
Where are you going to?
I'm hungry too.
Get two pizzas.
Where/were/we're
Where are you?
Were you ever going to tell me?
We're going on holiday tomorrow.
Its/it's
the cat chased its (gender neutral) ball.
It's (it has) been hot today.
It's (it is) mine!
Past
I passed the shop.
I went slowly past the shop
That is old history, it's all in the past.
My grand father passed away.
More to come. If there's anything in particular that you would like clarified please comment.