【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
在线课程【答案】A
【解析】考查让步状语从句。句意：无论你多么努力，如果不减少进食量，要想减肥确实很难。此处however相当于no matter how，“no matter how＋形容词/副词＋主语＋谓语”构成让步状语从句。四个选项中只有A项符合要求，所以选A。