It was Tom as well as his friends that for the serious accident.
A. was to be blamed
B. were to blame
C. was blaming
D. was to blame
网友回答
A. was to be blamed
B. were to blame
C. was blaming
(答案→)D. was to blame
解析：考查主谓一致。be to blame应该受到责备。as well as连接两个主语，谓语动词与前一个主动保持一致。句意：是汤姆和他的朋友对这起严重的事故负责。