Complete the sentences with the noun forms of these words.
Develop,fascinate,invent, observe,require .
1) The.........of the computer changed the way we live.
2) Rob's ......with aeroplanes led him to become a pilot.
3)In the last decade there have been several...........in space technology.
4) Detectives need to have good powers of...............
5) A university degree is one of the............for many jobs.​