He used to be a popular singer,but drug-----his drugA.resulted from B.contributed to C.attended to D.devoted to分别解释一下可以吗his drug打错了，是his ruin我主要是B,C,D搞不清

He used to be a popular singer,but drug-----his drugA.resulted from B.contributed to C.attended to D.devoted to分别解释一下可以吗his drug打错了，是his ruin我主要是B,C,D搞不清
He used to be a popular singer,but drug-----his drug
A.resulted from B.contributed to C.attended to D.devoted to
分别解释一下可以吗
his drug打错了，是his ruin
我主要是B,C,D搞不清

He used to be a popular singer,but drug-----his drugA.resulted from B.contributed to C.attended to D.devoted to分别解释一下可以吗his drug打错了，是his ruin我主要是B,C,D搞不清
B啦~
contribute to有促成的意思.
attend to是注意,致力于或照顾的意思,主语一般是人.
devote to是致力于的意思,主语也一般是人~

b?