The hard life in the mountainous area he has adapted to a real challenge to anyone.
A. mean
B. means
C. meant
D. meaning
网友回答
A. mean
(答案→)B. means
C. meant
D. meaning
解析：考查非谓语动词。adapt to 的宾语是前面的the hard life，故我们不能用D，本句缺少谓语动词，而且对任何人来说是一个挑战是一般现在时。故答案为B。