People _______the southwest of China were in great need of water a couple of months ago.
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A
in
B
at
C
to
D
on
推荐题目
Sound travels ______ air ______ a speed of about 340 metres per second.
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A
over; in
B
through; at
C
by; at
D
through; over
All the clerks went home _________ Mr. Yang,for he had to finish his work.
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A
except
B
for
C
to
D
with