关于补缴材料的问题：
建议你在截止日期前，提交全部完整的信息。如果你的推荐信没有完整，虽然补交学校可以接受，但是你在申请中已经处于材料不齐的劣势中。
补齐是肯定可以的，你也可以直接发邮件和学校admission office 进行沟通。
但是这样做还是会影响申请的。

请大家帮忙翻译一篇给美国老师的邮件。(不要电脑英汉互译)万分感谢

I'm Sally. I now Tianjin, sorry home for so long to write a message to you, don't know if you remember me. Even if we contact for long, but you left me very impressed. You are always very humorous, makes us very happy, you are always very patient to us. I really like you, and very grateful for what you gave me the courage and power. You said you don't like people doing many things at once, people should concentrate on doing one thing and do our utmost to do. I was in school the students ' Union a cadre is also leader of the course of a project Chairman, I have been very hard to make these work. But I am against me I do these things, she thought I should put all its energies on studying. I admit that she said, because they really affected my learning, takes too much of my time was the work that I learn is affected. Although these work exercise my leadership made me more independent than their peers, but now I have to give up, I believe that the future will have the opportunity, I would like to concentrate on my studies, my mother on my expectations are very high, I love her very much, I don't want to disappoint her. I will do their best to achieve good results. I like the United States, also plans to go to United States to study when you want to be your student, and you become good friends. Do you mind recently? look forward to your reply "