问题
选择题
_______ difficult the task may be, we must finish it on time, because we can’t meet such a precious opportunity _______ we have expected.
A．Whatever; that
B．However; as
C．However; that
D．Whatever; which
答案
答案：B
考查让步状语从句和定语从句。difficult是形容词，应该用副词修饰，排除A、D；such...as是固定搭配。故选B.