15. a. government b. technical c. parallel d. understand 16. a. Pyramid b. Egyptian c. belongs d. century 17. a. construction b. suggestion c. accurate d. hi-jacket 18. a. dedicate b. impressive c. reminder d. descendant 19. a. remember b. company c. technical d. interview 20. a. electric b. computer c. fascinate d. fantastic 21. a. domestic b. investment c. substantial d. undergo 22. a. confident b. influence c. computer d. remember 23. a. optimist b. powerful c. terrorist d. contrary 24. a. government b. destruction c. contribute d. depression 25. a. institute b. consumption c. specific d. encounter 26. a. tableland b. apparent c. atmosphere d. applicant 27. a. vulnerable b. satelite c. eleven d. element 28. a. arrival b. technical c. proposal d. approval 29. a. empire b. employer c. conductor d. transitor 30. a. celebrate b. fascinating c. survive d. elephant