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
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_________ he is, he has a wide range of knowledge.
#72084
A
Although a child
B
While child
C
Child as
D
A child as
He won’t wear a hat _____.
#68336
A
however cold it is
B
how cold it is
C
however it is cold
D
however cold is it