英语作文书面表达假如你是一名导游,陪同某外国旅游团游览长城.车抵长城,下车前你准备对大家作必要的介绍和交代.请拟一份讲话

The Great wall of China has more than 2000 years of history.It was built in the Qing dynasty and now it was one of the seven wonders.Passengers may walk around this attraction for two and half hours.That's mean we will leave this attraction on eleven o'clock.The bus will stop by the main entrance.So,please remmeber the bus plate and get on the bus sharply.A kind reminder to all of you,please bring all your valuables items along with you,do not left it on the bus by any chance.Please close the window too.Be careful during you visit the Great Wall of China,as it is a really popular attraction,so it is really crowded.I hoped all of you have a great time when you visit the Great Wall of China.Thank You.