1、Meet with you, is my best lucky 与你相遇，是我最好的幸运 2、just don't want to lose my smile left with pride. 没心没肺地笑，只是不想输掉仅剩下的骄傲。 3、I reversed the entire world,only put your reflection right. 我颠倒了整个世界，只为...

With the widespread of computer, more and more people tend to use Internet to get information and learn knowledge,especially, many educational agent use online class to teacher their students. Many people think it is convenient for student...