The reason ( ) he didn’t come was ( ) he was terribly ill.选项:a、why,becauseb、that,becausec、why,/d、that,that

问题描述:

The reason ( ) he didn’t come was ( ) he was terribly ill.
选项:
a、why,because
b、that,because
c、why,/
d、that,that

The reason主语
why he didn’t come定语从句,修饰主语the reason
was系动词,用作谓语
(that ) he was terribly ill.表语,由that(或省略that)引导的表语从句

选择C
固定搭配
the reason why...is/was (that)
that可以省略