I.  Choose the word whose underlined part is pronounced differently

1. A. hey                            B. honey                        C. obey                               D. grey
2. A. teaspoon                B. appear                     C. idea                              D. hear

3. A. safety                   B. traffic                      C. station                            D. plane

4. A. happy                        B. house                         C. here                                D. hour

5. A. chicken           B. architect                  C. cheap                           D. chair

6. A. pollution                 B. question                     C. education                     D. action

7. A. renewable         B. energy                      C. plentiful                           D. electric