Choose the word that has different pronunciation from others

Choose the word that has different pronunciation from others

1.  A. drought           B. ought                    C. brought                            D. bought

2.  A. hobbies           B. bags                      C. organizations                   D. groups 

3.  A. mash               B. scatter                  C. package                           D. metal

4.  A. happened        B. helped                  C. burned                             D. bored