英语作文 ：写一封60词的信给市长，表达你要做2010年上海世博会意愿者的希望
内容1.Shanghai will hould the 2010 World Expo
2.Why do i want to be a volunteer
3.What can i do for it
4.What an idoing for it now?
款式：
Dear sir
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Sincerely Yours
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Dear sir，
Since Shanghai will hold the 2010 World Expo, I
