假设你叫李华，做了几天上海世博会（Shanghai World Exposition）的志愿者volunteer，请你用英语给美国的笔友Tom写一封信，谈谈你当志愿者的心得体会，并鼓励其也做一名志愿者。要点如下：
工作：辛苦而又快乐
努力：练习口语更好服务
感受：自豪、珍惜
收获：合作（cooperation）和责任
注意：字数在100字左右，信件的开头和结尾都已给出，不计入总词数；可适当增加细节以使行文连贯。
Dear Tom,
How is everything going on?
Yours
Li hua
Dear Tom,
How is everything going?
These days I worked as a volunteer of Shanghai World Exposition 2010. It’s a valuable experience for me. In order to provide better service for the World Exposition, I made every effort to practice my spoken English, and have made great progress. Second, as a volunteer, I worked very hard and felt the happiness that went with my voluntary work. What’s more, I learnt more about cooperation and responsibility, which will benefit me a lot in the future.
I’m proud of becoming a World Expo volunteer. It’s an opportunity of my lifetime and I will cherish this beautiful memory forever.
Why not become a volunteer yourself?
Looking forward to your reply. Take care.
Yours,
Lihua