Up to Tuesday's attack, the worst school shooting in the U. S. was in March 1998 in Jonesboro,________ two boys, aged 11 and 13, shot and killed a teacher and four girls.
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A
while
B
where
C
when
D
then
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Well, you can buy $20 tickets or 30 $ tickets, ______ you prefer．
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A
which
B
whichever
C
whatever
D
what
The reason ____ he was late for school was _____he had to send his mother to a hospital.
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that; why
B
why; because
C
why; that
D
that; because
How can you expect him to make any improvement____ you never give him a chance to have a try?
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unless
B
when
C
until
D
even if
We’d better stay here a little longer he turns up unexpectedly.
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A
although
B
in case
C
since
D
if only
—How are you doing all these years, Jim? —Nothing new. Everything is going on _______ it was years ago.
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A
as
B
while
C
when
D
since