Tom was walking along the riverside when he heard someone calling him from behind. He turned around_______ found nothing.
#56161
A
but
B
and
C
so
D
or
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 I will wait here ____ the concert is over.
#58456
A
by
B
when
C
until
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as
Do you have _____ brothers ______ sisters? 
#58426
A
some , or
B
any , or
C
any , and
D
some , and