问题
选择题
It is you, I think, rather than your wife, _________ to blame for your son’s bad behavior at school．
A．that is
B．who is
C．that should
D．who are
答案
：D
：考查强调句型和主谓一致。强调句型：it is/was 被强调成分that/who其它成分。强调句型最大的特点就是把it is/was that/who去掉，句子仍然成立。本句话的主语是you,故谓语动词是are.故D正确。