一道高一英语单选题?为什么?

Answer D.
Tired of such a long movie,the litte boy turned to his favourite music.
固定结构,be tired of...
Tired of such a long movie作原因状语.省略了和句子一样的主语和be.→Because the little boy is tired of such a long movie,he turned to his favourite music.
句意：因为小男孩厌倦了如此之长的电影,所以他换到了他最喜欢的音乐.
A,B,C都是主动形式.