Choose the words whose underlined part is pronounced differently from that of the others in each group

 I. Choose the words whose underlined part is pronounced differently from that of the others in each group.
21. A. cause                            B. poison                     C. scatter                     D. disaster
22. A. icon                              B. loch                         C. official                    D. Scots
23. A. bury                              B. eruption                  C. mudslide                 D. untreated
24. A. volcano                         B. forest                      C. tornado                   D. ghost
25. A. earthquake                    B. breath                     C. thanks                     D. breathe
26. A. hands                            B. occasions                C. associates                D. others
27. A. frightened                    B. stamped                  C. walked                    D. laughed
28. A. fluoride                                    B. lid                           C. arid                         D. hidden
29. A. stack                             B. slash                        C. swamp                    D. stamp
30. A. agent                            B. angine                     C. regard                     D. surgeon