题目内容：

I want to know who________for the spoiled child.A.is to be blamed B.to blame C.to be blamed

优质解答

B.to blame
一般来说,表示“某人该为某事负责任,某事该归咎于某人”用sb is to blame for sth,而不用sb is blamed for sth.这是语言习惯.
who to blame for……是带有疑问词的不定式,类似what to do:I don't know what to do next.