I met a friend of mine _________ I was walking along the street.
#56938
A
before
B
as
C
because
D
since
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—Did you have a good time at the party?—Yes. We sang ______danced until late at night.
#57645
A
but
B
if
C
and
D
so
David doesn’t give up _______ he has failed in the experiment four times.
#57463
A
if
B
while
C
though
D
since