【题目】It is confirmed that a person can not be actually pleased if ___ he appreciates doing is ignored by the company as of no value.
A.when
B.that
C.what
D.where

【答案】C
【解析】句意：如果一个人所喜欢做的事情被公司认为是毫无价值的，确定他不会感到满意的。题干中if从句中包含的he appreciates doing主语从句，从句中缺少doing的宾语，故可知选C项。