Ⅸ. Make a call to your friend. 假如你要去旅行,想邀请朋友 Billy 一起去,给他打个电话吧。
]

Hello, may I speak to Billy?
This is Billy speaking.
This is Mike. I want to invite you to travel with me. Would you like to come?
Yes, of course. Where  are we going?
We will go on a trip to  Beijing.
Wonderful! I love that city very much!