He used to be a successful businessman, but drug his ruin.
A. attended to
B. contributed to
C. resulted from
D. devoted to
网友回答
A. attended to
(答案→)B. contributed to
C. resulted from
D. devoted to
解析：考查词组：A. attended to照顾，B. contributed to导致，C. resulted from源于，D. devoted to致力于，句意：他过去是个成功的商人，但是毒品导致他的毁灭。选B。