Who do you think for the accident?A. to blameB. to be blamedC. is to be blamedD. is to bl

问题补充：

Who do you think for the accident?

A. to blame

B. to be blamed

C. is to be blamed

D. is to blame

答案：

A. to blame

B. to be blamed

C. is to be blamed

(答案→)D. is to blame

解析：

be to blame表示“应该被责备”，为主动形式表示被动意义；句中do you think为插入语，解题时要设法通过分析句子结构排除插入语的干扰。