The drunk driver is for the traffic jam yesterday.
A. to blame; occurred
B. to blame; occurring
C. to be blamed; occurred
D. to be blamed; occurring
网友回答
A. to blame; occurred
(答案→)B. to blame; occurring
C. to be blamed; occurred
D. to be blamed; occurring
解析：be to blame为习惯用法，表示”应受责备”；第二空应填occuring，为现在分词短语作后置定语，相当于定语从句that occurred。