So long as we study with a strong will，we can answer the question hard it is.
A. no matter what
B. how
C. whatever
D. however
网友回答
A. no matter what
B. how
C. whatever
(答案→)D. however
解析：however引导让步状语从句，相当于no matter how,意为“无论如何；不论到什么程度”，后面接形容词或副词。又如：However tired you may be，you must do it today.不管怎样累，你也得今天做。