Choose the word whose underlined part is pronounced differently from that of the others

I. Choose the word whose underlined part is pronounced differently from that of the
others:         
Question 1. A. cruel B. useful C. July D. ruler
Question 2. A. secretary B. school C. position D. else
Question 3. A. mother B. tongue C. some D. today
Question 4. A. both B. enroll C. program D. lost
Question 5. A. pretty B. theater C. different D. student