Choose the word in each line that has the underlined italic part pronounced differently from the rest

 PHONETICS
Choose the word in each line that has the underlined italic part pronounced differently from the rest:
       1. A. added      B. mentioned       C. printed                    D. started        
2. A. formal    B. dormitory    C. morning    D. forget        
3. A. computer    B. include    C. introduce    D. institute    
       4. A. symbol      B. sweater                  C. inspiration              D. design
5.A. comprise    B. tropical    C. compulsory    D. mausoleum    
       6.A. different    B. difficult    C. invite    D. visit