Living in the mountain area has its problems, ________ obtaining water is a big problem.
#66944
A
of which
B
for what
C
as
D
whose
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Mother bought me 3 books on English study, the second ________ I really liked.
#73091
A
of that
B
of which
C
that
D
which
He likes to use words _________ is clear to her.
#73406
A
of which the meaning
B
of which meaning
C
of whose meaning
D
meaning of which
________, I could not memorize the text.
#69938
A
However hard did I try
B
However hard I tried
C
However I tried hard
D
However I had tried hard
The fact has worried people _______ the number of the deaths is still increasing.
#67573
A
what
B
which
C
that
D
when