ko có mình hu...hu...hu

Là hai số đối nhau như: 1 và -1; 2 và -2 .....

Team lãng mạn

30      

My school is very big. There are eight hundred studens and twenty-five classroom. It has two floor and my classroom is on the second floor. My school has a big yard and found in many flowersand trees.To the right of the school there is a volleyball course. I love my school very much