11. A. selfish 12. A. cinema 13. A. scientific 14. A. community 15. A. dangerous 16. A. ability 17. A. education 18. A. famous 19. A. intelligent 20. A. competition B. purpose B. position B. optimistic B. development B. impossible B. difficult B. chocolate B. polite B. musician B. disappointment Canooll C. surface C. department C. experienced C. occasion C. acceptable C. original C. cinema C. childish C. permission C. reasonable D. KIROWcage D. correct D. computer D. volunteer D. academic D. successful D. unbreakable D. government D. western D. D. entertainment different