—Is it interesting to play computer games?—Yes, _____ you are interested in playing computer games, you’ll have trouble giving it up.
#57470
A
once
B
twice
C
as
D
as soon as
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You can’t believe how terrible the fire is __________ you see it with your own eyes.
#55268
A
though
B
because
C
unless
D
since
—Hey, man. You can’t cross the street now. You have to wait ______ the traffic turn green.—Oh, sorry and thank you.
#56413
A
when
B
after
C
until
D
while
In American, a friend inviting you to a restaurant doesn't mean that he or she will pay for the meal ______ you are told ahead.
#55342
A
until
B
unless
C
although
D
if