1.   Biotechnology will surely play a vital role in any future chemicals industry.

2.   Code-making and code-breaking played a vital role in winning the war.

3.   Every member of the team has a vital role to play.

4.   In all these areas, stations played a vital role as the staging posts of industrial supply and demand.

5.   Nurses play a vital role in hospitals and surgeries.

6.   Proper training of food handlers has a vital role in improving their morale and motivation and ensuring that standards are met.