11.   It takes many years for kids who have suffered so much to learn to love and not to hate.

12.   It takes years to master the art of weaving.

13.   It took many years for linguists and sociolinguists to devise ways of getting the best of both worlds.

14.   It took them years to plan and build the plaza downtown.

15.   It will take many years to repair the damage caused by the floods.

16.   Many academic research projects take years to complete.

17.   Many reformers now say it will take many years to achieve political pluralism.

18.   Reading takes years of learning and practice by the human child, who already has an established linguistic and cognitive system.

19.   Reviving the moribund nuclear industry would be tough and unpopular, and could take many years to produce more power.

20.   So it would take more years of dogged detective work by a handful of investigators to connect the dots.