问题
选择题
The reason _______ matters most in his failing the English test is _______ he pays little attention to sentence structures.
A．why, that
B．that, that
C．which, because
D．what, because
答案
答案：B
考查定语从句和表语从句。the reason后面的句子不是对它的补充，因而不是同位语从句，而是定语从句，The reason是先行词，定语从句缺少主语，用that或which；排除A、D；is后是表语从句，用that引导。故选B。