问题
选择题
. It is Tom rather than his classmates that _________ to blame for what has happened.
A. are B is C. were D. was
答案
答案：B
考查主谓一致. to blame意思是该受责备,句意,是汤姆而不是他的同学该为发生的事情负责人.句子的实际主语是Tom,为单数第三人称,负责任是现在的事情,故用一般现在时态,选B.