问题补充:
The reason he explained is she was ill.
A. that , that
B. which , that
C. why,because
D. why, that
答案:
(答案→)A. that , that
B. which , that
C. why,because
D. why, that
解析:考查定语从句和表语从句。第一空是定语从句,先行词为The reason,从句he explained后缺少宾语,所以用关系代词which/that,第二空是表语从句,that 无词义,起引导作用。所以选A。