Verb	Noun	Verb	Noun
transform	transformation	amend	amendment
contract	contraction	expand	expansion
fluctuate	fluctuation	decline	decline
retain	retention	erode	erosion
modify	modification	accelerate	acceleration
stabilise	stability/ stabilisation	maintain	maintenance
innovate	innovation	adjust	adjustment

1. The rate of change is likely to [?] quickly in the future.
2. Gases [?] when heated.
3. We do not need to introduce a new system as we can just [?] the old one.
4. Governments should maintain political [?] at all costs.
5. Stock prices in Europe [?] wildly over the last few months.
6. The laws [?] last month to prevent any further moves towards democracy.
7. In the last 20 years Shenzhen [?] from a village into a major city.
8. The steady [?] of human rights is of great concern to many people.
9. The expansion and [?] of markets is a common phenomenon in the business world.
10. The government has decided against [?] civil servants’ pay this year.