1、It is undeniable that...
2、It is widely acknowledged that...
3、There is no denying the fact that...
4、Undoubtedly, ...
5、It is apparent that...
6、It goes without saying that...
7、As far as I am concerned,...
8、From my point of view,...
9、According to the latest statistics/ research,...
10、In conclusion,...
11、All things considered,...
12、To sum up,...
13、Furthermore,...
14、Moreover,...
15、On the other hand,...