Mr. Li is over sixty years old. He has retired.
He is one of my respected teachers. He taught us history when we were in junior Grade Two.
Although he was old, he taught us well.
He tried his best to make his lessons lively.
He often told us the interesting historical stories that were not in the text books.
Mr. Li usually made good preparations for the lessons and was strict with us,too.
At first, I was poor in history, because I couldn't remember the events clearly.
Mr. Li often helped me with my studies very patiently.
With his help, I made great progress and caught up with my classmates.
He was always very kind to every student.
As an experienced teacher, he was respected and loved by all his students.