Find the word which has a different sound in part underlines

1. Find the word which has a different sound in part underlines.
1. A. Matches.       B. Shelves     C.fridges.     D. Classes
( word underlined is "s")
2.A.laughs     B.thinks.    C.breaths.    D.cleans
(word underlined is "s ")
3.A.foot.    B.book.    C.look.   D.food
(word underlined is"oo")
4.A.writes.    B.makes.    C.takes.    D.drives
(word underlined is "s")