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Only four days remained ____ the exam.    
#50123
A
at
B
after
C
before
D
since
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---What time does the library open?--- ______ eight o’clock.
#47993
A
In
B
On
C
At
D
To
Mr Li’s students can call him _______ 57684051 or e-mail him _______ lihua@sina.com.
#49523
A
at; at
B
for; on
C
at; on
D
in; at
It’s important ____ the piano well.
#47045
A
of him to play
B
for him to play
C
of him playing
D
for him playing
Behind bad luck comes good luck. So something good happened _____ you..
#49108
A
in
B
to
C
for
D
with
Our art festival is  _ October 20" . Welcome to our festival.
#46845
A
in
B
on
C
at
D
with