问题
选择题
difficult it might be, I will try my best to work it out.
A．Whatever
B．How
C．However
D．What
答案
答案：C
题目分析：句意：无论这可能多么难，我都会尽力将它算出来。Difficult是形容词，用however引导让步状语从句，结构是：however+adj/adv+主谓，however相当于no matter how，所以选C。