问题补充:
difficult the task may be, we will try our best to complete it in time.
A. Whatever
B. No wonder
C. Though
D. However
答案:
A. Whatever
B. No wonder
C. Though
(答案→)D. However
解析:考查让步状语从句:句意:无论这个任务多么困难,我们都会尽力及时完成的。However+adj/adv+主谓,whatever修饰名词,no wonder难怪,though虽然,选D。