Teacher takes on York's top religious building (9)
?o???t?r? ( Not sure about the o)
About to request a barrel (4) ??s? (i think it must be cask but can't work out the C!)
Supporter provides the brain surgeon's first dodgy operation (7) ?r???e?
Thanks for help, I usually only have 2 to get at this stage but am having a bad crossword day!!!!!
Need the brain surgeons help!!!