Find the word which has a different sound in the underlined part

Question 1. find the word which has a different sound in the underlined part    
1. A. glass      B.rough       C. son        D. fun
2. A. laugh     B.brother       C. Mars      D. answer
3. A. garden    B. artist        C. warm        D. farmer
1. A. come      B.month      C. son        D. got