问题
选择题
The reason he made such kind of mistakes is that he has had no _______ experience of this kind of job.
A．whether; previous
B．which; before
C．why; previous
D．that; before
答案
答案：C
考查定语从句及形容词。句中先行词为the reason，在定语从句中作原因状语，故用关系副词why；previous为“以前的”，根据句意选C。