The reason he didn’t attend the meeting yesterday was his child had fallen ill.A. that

问题补充：

The reason he didn’t attend the meeting yesterday was his child had fallen ill.

A. that, why

B. why, that

C. why, why

D. that, that

答案：

A. that, why

(答案→)B. why, that

C. why, why

D. that, that

解析：用关系副词why引起定语从句修饰主语the reason;第二空是用that引导表语从句.