问题补充：
The murderer was brought in, with his hands behind his back.
A. being tied
B. having tied
C. to be tied
D. tied
答案：
A. being tied
B. having tied
C. to be tied
(答案→)D. tied
解析：考查with复合结构。本题中的名词his hands与动词tie之间构成被动的关系，故使用过去分词，做宾语补足语。A项表示的正在进行，C项表示的将要被捆；B项没有使用被动。故D正确。
