The reason he explained is she was illA.that , thatB.which , thatC.why,becauseD.
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The reason _____ he explained is ___ she was ill
A.that , that
B.which , that
C.why,because
D.why, that
试题答案
A
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。