"Goodness me!" (4)
(Other definitions for crumbs that I've seen before include "Blimey!" , "By heck! -all that's left of the cake?" , "Bits of bread - expression of dismay!" , "Very little to eat -- goodness gracious me!" , "that surprises me!" .)
(Other definitions for gosh that I've seen before include "Crikey" , "Christmas" , "Cor!" , "Well I never!" , "I'm amazed!" .)
(Another definition for golly that I've seen is " Gosh!".)