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It’s very kind _______ you to take the sick boy to the hospital.
#48449
A
for
B
of
C
about
D
on
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This is a nice city ______ many interesting places.
#50038
A
of
B
with
C
on
D
and
Noise pollution was a serious problem here      .
#48147
A
in the past
B
in the future
C
since then
D
once a week
Students in town go to work ___their bikes.
#46562
A
by
B
ride
C
on
D
in
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
The government stops businessmen（商人）from providing teenagers ____ cigarettes (香烟).
#48585
A
for
B
and
C
with
D
to