the reason___he gives for being absent from today's meeting is unaccepted.为什么?A which B for which C in which D why

问题描述:

the reason___he gives for being absent from today's meeting is unaccepted.为什么?
A which B for which C in which D why

答案选A
这是一个which引导的定语从句
the reason (which he gives) for being absent from today's meeting is unaccepted.
括号内的为定语从句