1.From what has been discussed above, we can draw the conclusion that ...
2.It is high time that strict measures were taken to stop ...
3.It is necessary that steps should be taken to ...
4.In conclusion, it is imperative that ...
5.There is no easy method, but ...might be of some help.
6.To solve the above-mentioned problem, we must ...
7.In summary, if we continue to ignore the above-mentioned issue, more problems will crop up.
8.With the efforts of all parts concerned, the problem will be solved thoroughly.