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Don’t get off the bus ________it has stopped.
#55561
A
until
B
if
C
because
D
though
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Sometimes I feel bored and don’t  know ______ to do.                          
#55615
A
how
B
why
C
what
D
where
—Will Mr. Brown come and play computer games?—No,               he has finished, his homework. 
#55797
A
when
B
if
C
unless
D
once
I moved to a small town and changed my job years ago. I don’t make        .
#57260
A
money as much as I used to
B
money as much as I was used to
C
as much money as I used to
D
as much money as I was used to
---It’s a long time         we last met. How is everything going?---Well, I am living a happy life.
#56747
A
when
B
since
C
after
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
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