问题
选择题
We don’t know the reason _____ he didn’t accept the job.
A．for what
B．for that
C．for which
D．for why
答案
答案：C
考查定语从句。for which= why，当先行词为reason时。如果前面有介词，引导词只能使用which，故选C。
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We don’t know the reason _____ he didn’t accept the job.
A．for what
B．for that
C．for which
D．for why
答案：C
考查定语从句。for which= why，当先行词为reason时。如果前面有介词，引导词只能使用which，故选C。