Choose the word whose has underlined part pronounced differently from the others

I. Choose the word whose has underlined part pronounced differently from the others

1. A. noses                     B. classes              C. closes                        D. misses

2. A. join                        B. hot                             C. flower                        D. boring

3. A. where                    B. who                 C. when                         D. what

4. A. home                     B. hard                 C.hour                           D. helpful

5. A. loves                     B. friends             C. stars                          D. sleeps