英语作文急求！！！

Dear Mrs. LI,
I’m Li Hua, Chair of the Student Union of YuCai Middle School, which is close to your university. I’手凯如唤m writing to invite you to be a judge at our English speech contest to be held in our school on June 15.

It will start at 2；00 pm and last for about three hours. Ten students will deliver their speeches on the given topic “Man and Nature”毕橡唤. We hope that you will accept our invitation if it is convenient for you. Please call me at 44876655 if you have any questions.
I am looking forward to your reply.
With best wishes
Li Hua