difficulties we meet we can work them out.A. WhateverB. HoweverC. WhereverD. Whenever

问题补充：

difficulties we meet, we can work them out.

A. Whatever

B. However

C. Wherever

D. Whenever

答案：

A. Whatever

(答案→)B. However

C. Wherever

D. Whenever

解析：这四个选项都可以引导让步状语从句，但是还要看 选项连接词的意思和用法，这里需要一个连接副词而且后面可跟副词，只有B符合条件。