求帮个忙写个英语作文。。不会写啊。。感谢

suppose your business partner Mr.smith has been appointed to the board of directors of the corporation he works for.write him a letter of congratulation of about 80 words.try to include the following: 1.your sincere congratulations on his appointment 2.your hope that your business relationship will continue to develop
假设你的商业伙伴史密斯先生已被任命为他工作for.write他一封约80 words.try祝贺包括公司董事会：1.你的衷心祝贺他的任命2.your希望你的业务关系将继续发展。
要求：第一段表达感谢之情并说明原因。
第二段细述并赞赏对方给予的帮助。
第三段再次阐述谢意并表达回报愿望。