Mark the letter

help me! cần lời giải
Mark the letter A, B, C or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
1.A. ethnic​       B. cinema                C. elephant           D.shelter
2.​A. access               B. account                       C. accident                D. success
3. A.severe            B.extensive               C.rescue                 D.forest
4. A.trap                B.rage                      C.shake                 D.earthquake
5.A. stilt​         B. span                    C. ship                  D.stop