Dear Professor Wang,

　　I am writing on behalf of our college to invite you to be a judge for the English speech contest which will be held next week.

　　We know that you are admired by all the students. As college students, we would like to improve our abilities in spoken English as well as written English. We would be grateful if you could be the judge for this contest to be held in Room 102, the Teaching Building on Saturday, June 4th, at 7p.m.

　　We trust you will be disengaged and able to give us the pleasure of your company. We are looking forward to seeing you.

　　Yours sincerely,

　　Li Ming