Cross out the one with the different sound

Cross out the one with the different sound(0.5 pt)

1. A.distance               B. different                 C. invite              D. pretty

2. A. town                   B. cow                         C. show                D.shower

3. A. campain                   B. rack                                    C. snack                      D. area

4. A. worried                    B. order                       C. uniform                  D. score