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 It’s essential for citizens to know that the haze(雾霾.can do harm ________ people’s health.
#47125
A
with
B
for
C
on
D
to
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That happened _______ a Monday morning．
#49223
A
at
B
in
C
for
D
on
He often practices English        chatting with his pen pal in Australia.
#48940
A
by
B
in
C
with
D
for
Who are you talking _________?
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A
to
B
at
C
for
D
/
Our country provided the people _____ plenty of things during the flood.
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A
in
B
to
C
onto
D
with
Sorry, I don’t know the answer _______ the question_______ it is too hard.
#50316
A
to, because
B
too, or
C
of, because
D
to, so