Here are the words from each group that have underlined parts pronounced differently:

1. **A**. **gym** (the "y" sound is different)
2. **A**. **island** (the "i" is silent)
3. **A**. **information** (the "in" is pronounced differently)
4. **A**. **live** (the "i" vowel sound is different)
5. **D**. **laundry** (the "au" sound is different)

6. **D**. **ceiling** (the "cei" sound differs from the others)
7. **A**. **muse** (the "u" is pronounced differently)
8. **C**. **temples** (the vowel sound differs)
9. **C**. **watched** (the "a" sound is different)
10. **A**. **asked** (the "a" sound is distinct)

For the second set:

11. **A**. **center** (the stress placement differs)
12. **B**. **restaurant** (the stress is on the second syllable)
13. **B**. **temperature** (different stress placement)
14. **C**. **apartment** (stress differs)
15. **A**. **museum** (the stress differs)

Let me know if you need further assistance!