Why did you take a taxi____you could come here by bus?
#80590
A
while
B
unless
C
when
D
until
It will be five years ____ we meet again. 
#80612
A
since
B
after
C
before
D
when
I have many friends ,______ some are businessmen .
#80615
A
of them
B
from which
C
who of
D
of whom
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