The hard life in the mountainous area he has adapted to ____ a real challenge to anyone. 
#101841
A
mean
B
means
C
meant
D
meaning
推荐题目
— Have you graduated from collage?— Yes, ________.
#101444
A
I studied French for two years.
B
I have been studying French.
C
I have studied French for two years.
D
I had studied French for two years.
He looked as if he ­­­_____ the answer.
#102238
A
knew
B
had known
C
knows
D
has known