Dear Li Lei，
I’m very glad to receive your letter today. How are you getting along with your study?
In your letter，you asked me whether you should buy a cell phone or not. In my opinion，it is
unnecessary for a student. Why？First，sending or receiving short messages takes up too much
time. Therefore，the time that you should spend on studies becomes shorter. Second，it is
forbidden to use cell phones at school because sometimes you have to answer the call in class.
As a result，your behavior may disturb others. Third，you may be disturbed by some unhealthy
short messages. Finally，as a student，you have to ask your parents for the phone expenses，
and they will have to spend more in supporting you than before.
In short，I suggest that you think it twice. Best wishes.
Your friend，
Wang Fei
答案不唯一