He was asked to account for his presence at the scene of crime.
A. complain B. exchange C. explain D. arrange

Question 47:         A. polite                 B. roommate          C. diverse              D. apply

Question 46:         A. angry                 B. complete           C. polite                 D. secure

Question 45:         A. quality               B. solution             C. compliment       D. energy

Question 44:         A. continental        B. alternative         C. revolution          D. explanation

Question 43:         A. invention           B. obstacle             C. discover            D. bacteria

Question 42:         A. stimulate           B. sacrifice             C. devastate           D. determine

Question 42:         A. decent                B. reserve               C. confide              D. appeal

Question 41:         A. identity              B. modernize         C. impressive         D. emotion

Question 40:         A. ornamental        B. computer           C. courageous        D. industrial