—The water was running all night long.
—Yes. It seemed that John . He was the last one to leave the lab.
A. was to be blamed
B. was to blame
C. had been blamed
D. should be blamed
网友回答
A. was to be blamed
(答案→)B. was to blame
C. had been blamed
D. should be blamed
解析：本题考查blame用法。sb. be to blame for sth.表示“某人因为某事该受到责备或者是某人的责任”。用主动形式表示被动意义。