We'd like to know the reason ______ she didn' t accept the job.

We'd like to know the reason ______ she didn' t accept the job.
A、what
B、which
C、why
D、when
【正确答案】：C
【题目解析】：【应试指导】本题考查定语从句。句意：我们想知道她不接受这份工作的原因。reason是表示原因的先行词，关系副词why引导定语从句可修饰表示原因的先行词，在从句中充当原因状语，故本题选C。