_____muchadviceigavehim,hedidexactlywhathewantedtodoA.HowB.HoweverC.WhateverD.Nomatter答案选B不选C的语法支撑是什么?在这里however在句中做什么成分?如果是修饰muchadvice,那么howeverwhatever和howwhat的

　　_____muchadviceigavehim,hedidexactlywhathewantedtodo

　　A.HowB.HoweverC.WhateverD.Nomatter

　　答案选B不选C的语法支撑是什么?

　　在这里however在句中做什么成分?

　　如果是修饰muchadvice,那么howeverwhatever和howwhat的区别是否是一样的呢?