The reason why I have come here for the job is that I just want to make practical use of

The reason why I have come here for the job is that I just want to make practical use of _________ I have learned in class.
A. which B. how C. what D. whether
【答案】C
【解析】
【详解】考查名词性从句（宾语从句）。句意：我之所以来这里应聘这份工作，是因为我就是要让课上所学派上实际用场。A. which哪一个；B. how怎样，如何；C. what什么，……的东西，……的事物；D. whether是否。分析句子结构，介词of后接名词或名词性从句，此处为名词性从句，要求补全引导词。从句缺少宾语，指物，结合句意，此处指的是“所学的东西”，只有what符合语境，故选C。