短文改错。I still remember my middle school life in Tianjin yet . I was then   in a s

I still remember my middle school life in Tianjin yet . I was then   
in a school for students from Tibet . As we were all left home      
at early age , we met lots of problems in our daily life . We                
had to do the washing , cleaning and shopping by us . However ,    
we seldom felt lonely or helplessly . We enjoyed our happy life .    
At weekends , we would play basketball , swimming in the pool    
or go for a picnic . We were living in a big family . We treat        
each other as brothers or sisters . If any one of us had any       
difficulty in our life and study , the other would help him out .      
It has been five years when we graduated , but those memories    
are as sweet as ever before .