I go to bed about nine o’clock every night.
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A
at
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in
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on
D
for
推荐题目
People _______the southwest of China were in great need of water a couple of months ago.
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in
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at
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to
D
on
---When did you arrive the day before yesterday? --_________2:30p.m.________3:00p.m.
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From; to
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At; at
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Between ;and
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/;/
---Which floor do you live __________? ---The first floor. I live _________ Room 112.
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in / on
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on / on
C
on / in
D
in / in