difficulties we’ll meet we must finish the work in time.A. HoweverB. WhateverC. WhicheverD

问题补充：

difficulties we’ll meet,we must finish the work in time.

A. However

B. Whatever

C. Whichever

D. Wherever

答案：

A. However

(答案→)B. Whatever

C. Whichever

D. Wherever

解析：whatever 无论什么，在这里充当定语；意为“我们无论遇到什么样的困难，都要及时完成任务”；however意为“无论怎样”，其后紧接形容词或副词；whichever 意为“无论哪一个或哪一些”；wherever意为“无论什么地方”。