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The teaching building has five floors. My classroom is ______________ the third floor.
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on
B
in
C
at
D
to
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What’s this ________?
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A
in english
B
In English
C
in an English
D
in English
–How long are you staying here?--_____ 4 days.
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A
In
B
For
C
After
D
At
---Can I help you? --- I want to buy something _______ presents _______my mother.
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A
for; for
B
as; for
C
as; to
D
like; to
I always go to sleep ___________ the light on.
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A
in
B
with
C
to
D
and
 Is that your pencil case ____the lost and found case?
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A
at
B
in
C
of
D
to