The 2010 Expo will take place in Shanghai, many countries consider a good chance to intro

发布时间：2020-08-16 10:49:47


The 2010 Expo will take place in Shanghai,      many countries consider a good chance to introduce their cultures to the world.
A. where
B. when
C. what
D. which

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A. where
B. when
C. what
(答案→)D. which
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