假设你们班最近就是否应该建设地铁的问题展开了讨论，以下是讨论结果，请根据表格提示给China Daily 写一封信，反映讨论结果并提出自己的观点。
注意：
1．开头已给出，不计入总词数；
2．不要逐句翻译，但可适当增加内容以使行文连贯；
3．词数：120—150
Dear Editor，
Recently，my class have had a heated argument on whether a subway should be built or not in our city．Opinions are varied．
Yours Sincerely，
Zheng Yan
Dear Editor，
Recently，my class have had a heated argument on whether a subway should be built or not in our city．Opinions are varied．
Some of my classmates think it necessary to build a subway. For one thing, building a subway can help solve traffic problems and people will enjoy a more convenient life. For another, it provides a new means of transportation, which is environmentally friendly.
Others hold the opposite opinion. They think that the long process of construction is bound to influence the city's traffic. What's more, too much money will be spent building it, and it will take a long time to refund it.
Weighing the pros and cons, I support the idea that a subway should be built because not only will the environment be protected but more space will be saved.
Yours Sincerely，
Zheng Yan
这是一篇正反观点类作文，要点明确，贴近生活，学生有话可说。难点是如何用恰当的词，句准确地表达如此简洁的中文意思。内容便于学生使用各种从句和句型结构。