free admissions to 哪位大侠告诉下

a letter of sponsorship to the Office of Admissions是什么
RT!

i'm in charge of all the admissions of postgraduate student in the university
这句 该怎么翻译
in charge of

求助英文推荐信的查错和修改意见
“Dear Admissions Committee:
In capacity as president of Journalism and Communication college at ***University,I am pleased to have this opportunity to recommend one of my capable students,Mr.Chen,to you for his pursuit of the masters degree In Journalism and Communication.Through my extensive observation of him in both academic and extracurricular aspects,I have come to the conclusion that Mr.Chen possesses a number of valuable qualifications that will make him an outstanding member of his graduate class.
I have known Mr.Chen since he has taken my course mass media theory during the academic year of 2006.While attending this compulsory course,Mr.Chen has impressed me as a bright and hard-working student who is highly motivated in his coursework.His academic integrity can be reflected by the fact that he ranked in the top 20% in his class.Unlike most of his peers,who gained knowledge merely from school lecturing,Mr.Chen has spent a great amount of effort and time on reading advanced articles and textbooks and therefore has developed a firm grasp of this subject.I deeply believe that my class has provided Mr.Chen with a solid basic background in media analysis,which is valuable to his academic pursuit in Journalism and Communication.
An open-minded individual who never let go any learning opportunity and is always willing to share with people his own opinions and ideas.While Mr.Chen was leading a team of SRP (Student Research Project) on research “The difference style of political remark on major press between Mainland,Taiwan and Hong Kong” in his sophomore year of college,he often came to me discussing various questions and problems he encountered.I was pleased to learn about his strong interest in media subjects and the most up-to-date advancement in this field.His diligence and commitment to coursework has left a deep impression on me.I have,without any doubt,come to consider him to be a highly promising student.With the intelligence and persistence that Mr.Chen has displayed,he will encounter few difficulties in succeeding in any academic environment and continue to perform outstandingly in your graduate school.
In general,I consider Mr.Chen a highly promising applicant to this program in his proposed field.I have the least reservation on his potential to succeed in his future educational as well as professional pursuits.Thank you very much for your time and consideration.Should you wish to discuss anything pertaining to his application,please do not hesitate to contact me.
Best regards,
(Signature)
Position:President of Journalism and Communication college at *** University
Email:***@tom.com
TEL:（+86）888888888”
以上是我写的推荐信,我把大学名称和人名都隐藏了一下,
比如关于语法错误,逻辑错误等任何意见,在此小弟先谢谢大家的宝贵意见!