题目内容：

Mr.Green stood up in defense of the 16-year-old-boy,saying that he was not the one_to blame_.
为什么填 to blame?

优质解答

sb. is to blame是固定搭配,不需要在to 的后面用被动,它本身已经含有“该受责备,该被谴责”的意思了.

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