... group it is do, with the usual morphological scatter do, does, did, doing,done.The expression do so derives from pro-verb do followed by anaphoric so. In manyinstances either do or do so can ... did not come the same as they used to do. (b) I don’t know the meaning of half those long word, and, what’s more, I don’t believeyou do either!The first do , in (a), substitutes for “come”; ... instance:He never really succeeded in his ambitions. He might have done, one felt, had it not been for therestlessness of his nature.Here, done substitutes for succeeded in his ambitions, and so serves...