_____ on May Day, the Shanghai Expo has attracted tens of thousands of visitors

题干

_____ on May Day, the Shanghai Expo has attracted tens of thousands of visitors around the world every day．

A．Having opened	B．Opened
C．Opening	D．To open

上一题下一题 0.64难度单项选择更新时间:2010-10-15 05:04:38

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