This CD-ROM can help you learn and have fun ______.
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A
at times
B
on time
C
at the same time
D
in time
推荐题目
John was born _______ June 6, 1985. 
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A
at
B
for
C
in
D
on
A lot of traffic was kept from going into the city centre       the heavy snow?
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A
because of
B
thanks to
C
thanks for
D
with the help of
______ book is ______ the floor.
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A
An;on
B
A;under
C
The;under
D
The;on