假定你是李华，负责学校英文广播站。请你给广播站的顾问Dr. Brown写一封电子邮件，邀请他参加广播站十周年庆典。要点如下1.感谢Dr. Brown的指导2.告知庆典的时间和地点3.邀请 参加庆典并发表讲话词数100左右
One Possible Version
Dear Dr. Brown,
Thank you so much for having been our consultant for such a long time. With your guidance, our broadcast station has been making great progress and is very popular with the students.
In order to celebrate the 10th anniversary of our station, a celebration will be held in the school lecture hall at 7:30 next Friday evening，in which there will be some performances such as singing and dancing, and we can also play games.
We would like to invite you to give a speech at the celebration. We would appreciate it if you could spare the time to come.
I am looking forward to your reply.
Yours sincerely,
Li Hua
