ừ

Số 0 không phải là số nguyên âm cũng không phải là số nguyên dương.

I have many friends but my best friend is Trang. She is 12 years old. She is shotsrer than me, slim and she has oval face. She has long black hair. Trang ia very creation and friendly. She alaways helps his friends and share everythings. Were both friendly.