请以"Dos and Don'ts for the 2008 Olympic Volunteers"为题用英语写一篇短文

It is reported that about 100,000 people will be chosen as volunteers for the 2008 Olympic Games in Beijing.What should the volunteers do and what should they not do?
Firstly,they should be polite and friendly to the athletes and visitors from all over the world,and avoid improper behaviour.Secondly,they should stick to their posts,offering good services,satisfying any reasonable needs and being ready to help those in difficulty,and never fail to do their duty.Thirdly,they should introduce the Chinese culture and history to foreigners so that they may know China better and never say or do anything that harms the image of our motherland.
If I have the honour to be chosen as a volunteer,besides the above,I will work hard and creatively,but never be lazy.I will follow the law and disciplining,but never break them.I will take the opportunity to make friends with the athletes and visitors,and help make the 2008 Olympic Games a great success.