范文： Dear John,
April 6th is my birthday, and I plan to hold a party.I wonder if there is any chance for your to come to my birthday party at my house on that night. Since you are my best friend, I would be very glad to to share the important moments with you.
In addition, since you are a fan of rock music, I am glad to tell you that I have invited our campus Rock'n'Roll band, the \and cake-cutting, which I am sure you will thoroughly enjoy.
The dinner starts at 6 pm so that we can have a nice and long evening. I sincerely hope you can attend, so please let me know your decision.
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Yours, Li Ming
