问题
选择题
The Shanghai World Expo came to an end on October 1st, _____ turned out to be a great success. [ ]
A. which
B. when
C. that
D. it
答案
答案：A
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The Shanghai World Expo came to an end on October 1st, _____ turned out to be a great success. [ ]
A. which
B. when
C. that
D. it
答案：A