Choose the word that has different pronounce from the others in each group

Choose the word that has different  pronounce  from the others in each group.

 A. raised                   B. coughed                 C. practiced               D. talked

 A. athletics               B. month                    C. gather                    D. both

 A. invitation                        B. collection             C. equation                D. celebration.

 A. horrible                B. household             C. rehearse                D. hour

A. throw                    B. allow                      C. flow                        D. grow