______ difficult the problem was, he tried his best to solve it.A.No matter B.Al

______ difficult the problem was, he tried his best to solve it.A.No matter B.Al

题型:不详难度:来源:
______ difficult the problem was, he tried his best to solve it.
A.No matter B.Although C.Whatever D.However

答案
D
解析
本题考查状语从句。however="no" matter how不管多么难。句意为:不管这个问题有多难,他都尽力去解决。
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