please make the corrections necessary

Please correct grammar sentences.

1 Do you believe the facet that he shows people. He's not as nice as he makes out to be.
2 The subway is easy to understand. We have to stop at the station where the 2 lines intersect and take the red line.
3 I wish just one day that no part of my body would hurt. One day I have a head ache the next I have a stomach ache the next my foot hurts.
4 When you have self serve fountains, people get water cups free then fill up on Pepsi. Refills are expensive to the company.
5 The only city I'd not be miserable about living in other than Chicago is Denver.
6 Do you have to give a person's deposit back if you can't carry out your job due to natural disasters?

thanks in advance