【题目】Your support is important to our work. you can do helps.
A.However
B.Whoever
C.Whatever
D.Wherever

【答案】C
【解析】题目考查主语从句。helps是谓语，“you can do”是主语成分，即主语从句，在主语从句中，do后缺少宾语，因此用whatever引导，故选C。