Find the word which has different pronounced form the other

I. Find the word which has different pronounced form the other.
1. A. height B. high C. timid D. quiet
2. A. rhythm B. nothing C. marathon D. sympathy
3. A. sport B. clothes C. rainbow D. sewing
4. A. unfair B. compare C. share D. complain
5. A. atmosphere B. hear C. beer D. leather