问题补充：
I feel it is you who for the accident.
A. is to blame
B. is to be blamed
C. are to blame
D. are to be blamed
答案：
A. is to blame
B. is to be blamed
(答案→)C. are to blame
D. are to be blamed
解析：考查固定词组：be to blame“应受责备”，用主动表示被动，这是强调句，谓语应该和前面的主语一致，就是you，谓语是are，选C。
