Dear (1) __________ (史密斯教授),All the faculty members of Hu Nan University will celebrate the Seventieth Anniversary of the School Founding (校庆) in Teachers' Reception Hall (2) __________________________ (12月10日晚上7点). We have decided to have a party in honor of the occasion. It would give us great pleasure to (3) _________________ (您出席). Please come and bring your wife or other guests.(4) _________________________________. (我们大家期待您的到来)With best wishes,Student's Union