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Where is my backpack ? It’s          the floor .
#49899
A
under
B
in
C
on
D
at
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Books are helpful _____ us.
#50001
A
from
B
on
C
in
D
to
Please open a window _________ turning on air conditioning.
#47107
A
instead of
B
instead
C
not
D
rather
He is one of_______in China.
#48813
A
the great scientist
B
the great scientists
C
the greatest scientist
D
the greatest scientists
_________ the money that Mr Brown_________,poor Mary could go back to school again.
#51296
A
In; offered
B
With; offered
C
In; was offered
D
With; was offered
Hangzhou is famous _______ producing silk in China.
#50235
A
from
B
at
C
in
D
for