Mr. Green stood up in defense of the 16-year-old boy saying that he was not the one.A. bl

问题补充：

Mr. Green stood up in defense of the 16-year-old boy, saying that he was not the one.

A. blamed

B. blaming

C. to blame

D. to be blamed

答案：

A. blamed

B. blaming

(答案→)C. to blame

D. to be blamed

解析：选择C。blame 是及物动词，一般用blame sb (for...).

但，在用法be to blame中表示被动意义：应该受责备。

He is to blame .

blame 一般不用被动.

He is to blame for the accident.他应在事故中负责.