话题阐述 say something about your best friend求回答

the best friend is like a mirror, he can tell you if there is any defect upon yourself.actually one has to make different friend to know more about himself.
the best friend is like teacher, you may learn so much from him. one will have so many teachers, so one will have so many best friends. they appear at different places in different times. they stay with you to get through hardships, to guide you towards the right direction.
a best friend is like one of your family members.he will not appear until you need, a friend indeed is a friend in need. he will always there, everytime when you meet, it is just like families being together.