任务：请你用英语给秘书写一张50左右的便条。告诉她：
1 你何时回公司；
2 让她通知公司人员下午何时何地开会；
3 你在会议上要谈什么 请用下面的格式：
Miss Li ,
……
Wang

范文：
Miss Li ,
I have to go out at once . And I think I will come back in about two hours . Please tell me all the people in our company that there is going to be a meeting in the hall at four o’clock . Everybody has to attend the meeting because I have something important to tell them .
Wang