Dear jiff:I am li hua from Beijing hong xing middle school . I am very happy to learn that you are going to stay with my family while you are in Beijing.While you are here, we will provide you a room with your own with a bed, a desk, a couple of chairs as well as a TV. You will also have your own bathroom. Our school is quite close to our home, so we could go to school together by bicycle. At noon we will eat at the school dining hall. I am sure you will like the delicious Chinese food here, and enjoy talking with friends over lunch. Class in our school usually finishes at 4 in the afternoon. You can then join other students in playing ball games or swimming. It will be a lot of fun.If you have any question or request, please let me know. We will try my best to make you stay here a pleasant experience.Best wishesPublic Transportationwith the development of the modern civilization, public transportation needs to be developed (urgently)( in China). I can illustrate some examples. There does not only exist serious traffic jams but also crowded buses, underground and railways. Commuters(上班族) find it hard 【(to get to work on time)( due to overcrowded buses or tubes.) 】. Travelers could hardly get on buses （in big cities） 【during weedends （owing to fewer buses and more people）】. In a word, public transportation has become bottleneck （to the advance of Chinese economy.） To solve the above-mentioned problems, the departments concerned should carry out the following steps: The first step to build more roads, highways or railways .The second step to take is to introduce new technology（in order to raise the efficiency of vehicles）. For instance, the speed of trains can be increased as much as two times so that two times as many（一样多）（一样多） people can be held. In this way, the pressure （on public transportation） can be dramatically alleviated. On food securityThere is no denying the fact 【that food safety is a grave problem （with which this country is confronted）】. For example, (illegal cooking oil, poisonous milk powder and other unhealthy food) are threatening our life. Not only are （peoples health and lives ）directly threatened, but （tremendous amounts of resources ）are wasted 【While blaming those wrongdoers （作恶者）and sympathizing those victims, 】we must examine the fundamental causes （of the problem ）and work out effective solutions. First, in the course of the rapid economic evolution, we ignore moral education, giving rise to the rising rate of the problem. More importantly, the lack of（ adequate regulation and punishment on those illegal producers） enforces the trend. Confronted with the problem, there are several measures (for us to adopt.) First and foremost, I strongly recommend (that the government should strengthen the management of food security,) because (if there were no serious supervision), the food security problem would be more severe. Therefore, it is high time that 【relevant laws and regulations were worked out and rigidly enforced （to crack down（打击） on any production and circulation of substandard food products）】. Meanwhile, inactive and incompetent civil officers should be immediately clean out (from the team of food safety supervision and administration). In addition, government should strengthen moral construction (which offer a large amount of course at school and makes numerous films about moral construction). Therefore, Only （with these measures taken ）can we expect a bright future of this nation.