【正确答案】[参考范文]
December 19,2010
Dear Allen,
We are having all classmates for dinner at 4 p. m. next Sunday (December 26) at the hotel. There will be a big reunion. Would it be possible for you to join in it at your convenience? I hope that you will feel it worthwhile to accept this invitation. We haven' t seen each other for a long time and we are all anxious to have you with us.
We shall be very much pleased if we receive word of your acceptance in the near future, so that we can make good arrangements in time.