Living in the mountain area has its problems , _____ obtaining water is a big problem.
#67011
A
of which
B
for what
C
as
D
whose
推荐题目
The news _____ he has passed the exam makes his parents very happy. 
#69220
A
that   
B
which   
C
whether   
D
what
She may have been caught in the heavy traffic, ____ she won’t arrive here by five o’clock.
#70248
A
in case  
B
in case of  
C
in that case 
D
in which case