Mark the letter A; B; C or D to indicate the word whose underlined part is pronounced differently from that of the rest in each of the following questions

I. Mark the letter A, B, C or D to indicate the word whose underlined part is pronounced differently from that of the rest in each of the following questions:

1. A. rest                               B. help                            C. answer                      D. plenty

2. A. kitchen                         B. chemistry                  C. children                    D. charity

3. A. collect                          B. clean                          C. city                            D. calories

4  A. flu                                 B. uncle                          C. sunburn                     D. much

5. A. sick                               B. swimming                 C. itchy                          D. riding