FORD MONDEO BRAKE PROBLEMS

HOWDY THIS LADY NEEDS ASSISTANCE WITH MY 1.8TD MONDEO 1998.TWICE SHE
HAS FAILED THE IRISH NCT TEST ,AND SHE IS DUE TO BE TESTED AGAIN ON WED
29TH MARCH SO PLEASE I NEED HELP QUICK.I HAVE REPLACED BOTH PADS AND
SHOES PLUS HOSES AND SHE FAILED THE BRAKE TEST WORSE THAN THE FIRST
TIME.I HAVE BEEN TOLD THAT MAYBE SHE ISNT GETTING FLUID TO THE BACK .
IF ANYONE OUT THERE HAS HAD THIS PROBLEM AND SOLVED IT PLEASE LET ME
KNOW THANKS

1.get the air out of the brake-lines//that will do-it.
2.put the rubber-kits in each wheel//hydrolic-cylinders
3.put in a rebuilt /replacment master-cylinder
4.[maybe the brake-pedal is stuck/bent/hitting-on something that stops
it from being pushed-down ? ]