-When was David born?-He was born ________ June 12, 1989.
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A
at
B
in
C
on
D
for
推荐题目
Our school is ________children _______6-12.
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A
in, for
B
for, in
C
of, for
D
for, of
We should throw the rubbish into the dustbin ______ protect our environment. 
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A
as a result
B
so that
C
in order to
D
in order not to
The woman was         in that hotel before she came here.
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A
on service
B
on the service
C
in service
D
in the service
---________do you spend _English learning every day? ---For about an hour.
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A
How long, in
B
How many times, on
C
How often, on
D
How long, on