a letter from to pen friend

是改错吗,把from 或to 去掉其中一个都行,即
a letter from pen friend 一封来自笔友的信/ 来自笔友的一封信
a letter to pen friend 给笔友的一封信
加油!不明白再问!我要的是作文A letter from/toa pen friend Dear Lily, How are you? You have known Beijing will be the host city of the 2008 Olympic Games, haven' t you? Everyone in Beijing is very excited. What should we do for the 2008 Olympic Games? We are going to plant some trees in the West Lake Park this Saturday in order to make Beijing more beautiful. We are very happy to do something for Beijing and the Olympic Games. By the way I have two tickets for tomorrow's film. Will you join me? Please phone me if you will. Best wishes!Yours, Li Ming