Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. Question 15. A. cancel​ ​B. continent​ ​C. collection D. center Question 16. A. campus​​B. capture​​C. ban​​​D. Again Question 17. A. cancel​ ​B. continue​ ​C. collection D. access Question 18. A. global​​B. greenhouse​​C. energy​D. underground Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. Question 19. A. royal​​B. destroy​​C. talent​​D. passion Question 20. A. conservation​B. variety ​ C. preservation D. circulation Question 21. A. disease​​B. cancer ​​ C. sickness ​ D. visit Question 22. A. confusion​B. solution​​ C. protection​​D. editor