The World Expo 2010 is being held at a time the world is looking for a new kind of balance between nature and cities．
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when
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where
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which
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that
推荐题目
Her son was accused of cheating by the police, ________ made it difficult for her to go to sleep.
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what
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as
C
which
D
where
Was it when you were attending high school _________you first listened to pop music?
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when
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that
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which
D
where
--- I can’t find Xiao Ping. Where did you see him this morning?--- In the reading room _________ he often studies in.
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that
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where
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in which
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the one
It’s the same in China --- many people, ________ some are not overweight at all, are always going on diets or taking weight-loss pills, ________ are often dangerous.
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whose; which
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of which; who
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of whom; which
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who; that