11. He has a well-defined national reputation anyway, which cannot be transformed at a stroke . 12. At a stroke , the measure would empty Cambodia's jails and then possibly demolish them.13. At a stroke , Mary became the wealthiest heiress in Britain, perhaps in all of Europe.14. He therefore hopes to solve Britain s defence, educational, and unemployment problems at a stroke . 15. At a stroke he created in Swedish poetry a new vision of the natural and urban scene.16. Seeking innocence by association will not help Gore overcome " Clinton fatigue " at a stroke . 17. At a stroke Louis had added one of the most powerful duchies in France to the Capetian domains.18. At a stroke MacGregor lost his main source of income and the support of the influential Bowater family.19. At a stroke Sara is left a penniless orphan, and Miss Minchin's own fortune disappears.20. At a stroke , the $ 40 billion-a-year tobacco industry would become a criminal enterprise.
