1.  To me, I usually do some works in the society, but I think I must study carefully at first, only my performance is well, I go out to practise, therefore, for instance I study my class carefully, for another thing , I do teaching and other things , such as seller, worker, investor and so on .

2.  As we all know that China is a large country and has a prosperous future, most investors are confident about the expansion of their companies and promote a lot of cooperation.

3.  It have been changed by investors.