It is you I think rather than your wife to blame for your son’s bad behavior at school

问题补充：

It is you, I think, rather than your wife, to blame for your son’s bad behavior at school.

A. that is

B. who are

C. that should

D. who is

答案：

A. that is

(答案→)B. who are

C. that should

D. who is

解析：考查：rather than连接两个主语时，谓语动词取决于前者。句意：我认为是你而不是你妻子因为儿子在学校的坏行为而受责怪。rather than前面的主语为you，所以选B。