任务：请你用英语给她写一张50左右的便条。告诉她：
1 你为什么马上要回家；
2 明天可能不去机场送她；
3 祝她旅途愉快。
请用下面格式：
Xiao Wang ,
……
Wu Dan

范文：
Xiao Wang ,
I have to go home at once because my father phoned me just now , he said that my mother was badly ill and we need to send her to hospital . I’m sorry to tell you that maybe tomorrow I can’t go to the airport to see you off . I wish you a good trip .
Wu Dan