The government has promised to do ______ lies in its power to ease the hardships of the victims in the flood-stricken area.[2004]
【正确答案】
C
【答案解析】解析：whatever lies in its power充当的是do的宾语从句，同时whatever是从句中的主语，因此本题应该选择C。however和wherever不引导宾语从句，一般引导状语从句，而whichever引导宾语从句时不能作主语。