Qualities of a good friend

hmmppp..

today english classes, ms.shan ask us to write about...
"qualities of a good friend"

i have no idea! sommore.. when i get the point of what to write...,

somebody making noise around me.....

arghh! im sosoo angry with that..

then i stop to write for the essei. i really really have no ideas..

because i have no good friend!

and Yeah~ what the different between good friend and best friend?

somebody can tell me? or... it's just same meaning?