a. gone out b. broken down c. run down d. worn out → b 48. David was unhappy his childhood. a. while b. for c. during d. as → c 49. Stopping racial simply by legislation is impossible. a. tendency b. prejudice c. obsession d. seclusion → b 50. Have we any contingency plans to back on if this one fails? a. fall b. lean c. turn d. come → a