Choose the word which has different sound in the underlined part in each line

I . choose the word which has different sound in the underlined part in each line
1 . A.control     B.hotel      C.conical      D.remote
2 . A.frustrated   B.enjoyed   C.cleaned   D.phayed
3 . A.pretty    B.helpful   C.delicious   D.expect
4 . A.surface   B.conduct    C.stuck   D.multicutral