题目

英语邮件写作,
Mr Greene has invited you to deliver a speech to the graduates at her university in June.Write an email back to him:
 acknowledging his letter
 saying which date (or dates) you are available
 giving the topic and a brief summary of your speech
 asking for further confirmation

提问时间：2020-10-20

答案

Dear Mr.Greene,It's my honor to receive your invitation.I am glad to deliver a speech to the graduates if I have the time.In June,I'll be busy doing my research.But,on June 30,I'll be free.If that day...