The teaching of Billy made a good impression onme.

Althougt he can't watch,he never gave up.Personally he had set a good example for me and he remind me to work hard. When he teached me,he will try his best to help me and gave a lot of advances to me. In addition,he always review himself and ask us opinions about the courses in order to do more better.What's more he is a very nice teacher and he can get on well with students.Lasly,he let me konw "Nothing in the world is difficult,if you put your heart into do it."