Hello everyone,today I will tell you my best friends.(单句)I have known them since I was in primary school.(状语)One of them is a beautiful girl.(单句)She is good at studying and she help me with my Maths.(并列)I also have two boy friends.(单句)One of them is a little bit lazy and the other is mostly perfect.(并列)They often invite me to jion their birthday party.(状语)The best symbol of our friendship is helping each other in a large park last month.(状语)Since then,we take more care of our friendship and we will be the best friends until the end.(并列)