That was the reason-------Mac refused to speak at the meeting.whythatwhichof which

问题描述:

That was the reason-------Mac refused to speak at the meeting.
why
that
which
of which

why
定语从句,why=for which

a
定语从句

A
后面是reason的修饰语,即.的原因.
Mac拒绝在会议上演讲的原因.

why