The 2010 World Expo will take place

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Dfrom...to这是一个固定的短语,从...到...的意思,放在这句话里,指从三月一号到十月一号是上海2010世博
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供参考答案1:
D.from
供参考答案2:
from ....
供参考答案3:
The 2010 Shanghai Expo, which is scheduled to be held from May 1 toThe 2010 Shanghai Expo ，held from May 1 to October 31，will bring