For (3)
'for' is the definition.
(as in being 'pro' something)
This is all the clue.
(Other definitions for pro that I've seen before include "Skilled" , "Golfer" , "Preposition meaning for, in favour of" , "Top player" , "One doesn't play just for the love of it, in short" .)
(Other definitions for ales that I've seen before include "What might be delivered by pumps" , "Alcoholic drinks" , "A sale of beers" , "Types of beer" .)