I don’t know the reason you were absent from the meeting, and I am not sure whether someo

I don’t know the reason you were absent from the meeting, and I am not sure whether someone will tell me the reason you haven’t told me.
A. why; that
B. that; why
C. because; why
D. of which; that

(答案→)A. why; thatB. that; whyC. because; whyD. of which; that解析：两空的先行词均为“reason”，关键要看关系词在定语从句中充当什么成分。第一空后面的句子主要成分全，只少次要成分状语，故用关系副词“why”。第二空后面的句子“told”应该要跟双宾语，缺少的是直接宾语，故用关系代词“that”。句意：我不知道你为什么没有出席那次会议。但我不能肯定是不是有人会告诉我你没有告诉我的原因。

我学会了