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

Find the word which has a different sound in the part bolded:
1. A. answer B. teacher C. butter D. birth
2. A. again B. alone C. neighbor D. burn
3. A. of B. fat C. few D. safe
4. A. sping B. visit C. present D. president
5. A. curl B. keen C. glove D. cook
6. A. few B. new C. sew D. nephew
7. A. closed B. practiced C. asked D. stopped
8. A. tired B. my C. arrive D. gift
9. A. tables B. watches C. boxes D. changes
10. A. son B. sugar C. soup D. sing