It is not I but Tom and his wife that for the car accident.A. am to blameB. are to blameC

问题补充：

It is not I but Tom and his wife that for the car accident.

A. am to blame

B. are to blame

C. am to be blamed

D. are to be blamed

答案：

A. am to blame

(答案→)B. are to blame

C. am to be blamed

D. are to be blamed

解析：强调句型，强调部分为not…but…, not…but…连接两个名词作主语时谓语动词与but后面的主语保持一致；sb be to blame主动表被动，因此选B。