Choose the word whose underline part is pronounced differently from that of the other

Choose the word whose underline part is pronounced differently from that of the other
1.      A. ẹnjoy             B. event               C. repair                  D.essay
2.      A. date               B. father              C. hard                    D. fast
3.     A.much               B. mum               C. study                  D. student
4.     A. biology            B. appliance        C. anniversary             D. science