More historical buildings in the old town will fall down ________we try our best to protect them.
#55384
A
if
B
since
C
unless
D
in order that
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— Tomorrow is Saturday, why don’t we play basketball in the gym? —Good idea, ________ I have to see my grandparents.
#58403
A
so
B
or
C
but
D
and
—It’s too late. I have to go now. —Oh, it’s raining outside. Don’t leave it stops.
#55680
A
while
B
if
C
until
D
after