1.There is a long—running debate as to whether...
2.Along with the development of ...,more and more...
3.Nothing is more important than the fact that ...
4.We should have perseverance,especially self—confidence.
5.I want to let you konw how to express how sorry I am.
7.As we can see from the table...
8.What calls for special attention is that.
9.In view of the present situation,...
10.I an writing to thank you for...