I don’t know the reason you were late for the meeting, but I’m sure someone will tell me you don’t want to explain.
A. why; that
B. why; what
C. for which; which
D. for which; that
网友回答
A. why; that
(答案→)B. why; what
C. for which; which
D. for which; that
解析： 第一空，考查定语从句，先行词为the reason，从句中缺少原因状语，所以用why/for which，第二空考查名词性从句中的宾语从句，explain 后缺少宾语，所以用what，故选B。