【题目】________ hard you try，it is difficult to lose weight without cutting down the amount you eat.
A.However
B.Whatever
C.Whichever
D.Whenever

【答案】A
【解析】句意：不减少进食，无论你怎么努力，要减肥是困难的。however(＝no matter how)无论怎么，引导让步状语从句。故答案选A。