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Alow-carbon(低碳)lifestyle has an effect         our daily life.More and more attention has been paid to           Energies these days.
#46552
A
in;save
B
in;saving
C
on;save
D
on;saving
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Peng Liyuan,         First Lady of China invited Obama’s wife and his children to visit China         March, 2014.
#45859
A
a; on
B
the; in
C
a; in
D
the; on
He can’t draw        Bill.
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A
as good as
B
as better as
C
more badly as
D
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--- Jack is a hard-working boy. --- Yes. All of us want to recommend him            the Best Student Award.
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as
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for
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–How long are you staying here?--_____ 4 days.
#48377
A
In
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For
C
After
D
At
Exercise is good ______us.  
#47654
A
at
B
in
C
of
D
for