Choose the word whose underlined part is pronounced differently from the rest in the same line

Choose the word whose underlined part is pronounced differently from the rest in the same line. (3 pts)

16.A. purse                             B. nervous                   C. surprise                          D. worse

17.A. architect                        B. parachute                C. choir                               D. psychology

18. A. precious         B. preparation           C. pretty                                 D. repetition
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