- The water was left running all night longYes. It seemed that John . He was the last

问题补充：

- The water was left 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

Chad been blamed

Dshould be blamed

答案：

A. was to be blamed

(答案→)B. was to blame

C. had been blamed

D. should be blamed

解析：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。句意：--昨天晚上，水一直在淌。--是的，好像是约翰的责任，他是最后一个离开实验室的。选B。