The reason he didn’t come was he was ill.A. why; thatB. that; whyC. for that; thatD. for

问题补充：

The reason he didn’t come was he was ill.

A. why; that

B. that; why

C. for that; that

D. for which; what

答案：

(答案→)A. why; that

B. that; why

C. for that; that

D. for which; what

解析：考查定语从句和表语从句。第一空使用why引导定语从句修饰先行词the reason，在定语从句中做状语；第二空that引导表语从句，在句中起连接作用，不充当任何成分，也没有任何意思。句意：他没有来的原因是他病了。故A正确。