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

问题描述:

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

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...