I am form number three middle school这样写可以吗,还是一定要写成缩写NO.3

I am form number three middle school这样写可以吗,还是一定要写成缩写NO.3 I am 10 years old,可以这样写吗?还是一定要写成ten? I am a student of NO.3 middle school. I am 16 and Istudy in NO.1 middle school I am No.5 Middle School's student I am in No.5 Middle School与I am at No.5 Middle School这两种表达都正 I am in No.6 Middle School.I am in the No.6 Middle School.这两 第一中学 直接写成No.1 Middle School吗, I am a middle school i'm in the Number 3 Middle School. I am o pupil of Grade one,i am in No.1 Middle School. I am o pupil of Greda one,i am in No.1 Middle School.