回答：
下面是我编写的一个关于生活改变（changes they want to make）的一个小对话,三个人的改变分别是发型,手机和买车,三个人的轮流发言贯穿其中.估计时间应该差不多.供参考.相信你们能够写出更好的!
祝你们成功!Wish you all success!
题目要求：
7.A,B and C are talking about changes they want to make in their life.They take turns to give some suggestions.
情景对话：
A:Life is so boring.
B:Yeah.Every day is almost the same.
C:True.It seems we lack change.
A:I decide to make a change.
B:What is it?
C:In what way?
A:I want to have a new hair style.
B:But I think your style now is very good.
A:Yes,but I just want to be different.How about you?
B:Me,I plan to change my old cell phone into a 3-G one,I have used this old one for 5 years.
C:Oh,so long!Indeed you should change,or else you will be out of date.
B:Do you want to change,too?
C:Definitely.I have decided to buy a car!
A:What?You?
B:You are always riding a bike,then why a car?
C:You see,cars are so popular today,and riding a bike is not so good when the weather is bad.
A:I agree.But a car is expensive!
B:Besides,you have to have a driver's licence first!
C:You two don't worry!I have thought all this over.First,I will learn driving in the coming holiday and at the same time I will find several part-time jobs to earn enough money.
A:It will be hard to learn driving and do some part-time jobs at the same time.
B:Are you sure you will pass the driving test and get so much money?
C:Yeah.My cousin has a car and he can help me a lot.I will try to buy a second-hand car which is much cheaper.
A:Oh,I look forward to seeing your car!
B:I wish you success!
C:OK.Thank you!