Here are the words where the underlined part is pronounced differently from the rest:

1. **A. great** (the "ea" is pronounced /eɪ/, while the others have different vowel sounds)
2. **A. wet** (the "e" is pronounced /ɛ/, while "better" has /ɛ/ but others vary)
3. **A. horrible** (the "horr" is pronounced /hɔːr/, differing from others)
4. **A. party** (the "ar" is pronounced /ɑː/, while "hour" has a different sound)
5. **A. stove** (the "o" is pronounced /oʊ/, differing from others)
6. **A. garden** (the "ar" sounds different from the others)
7. **B. carrot** (the first syllable "car" has a different vowel sound)
8. **B. sandwich** (the "s" in sandwich is pronounced differently)
9. **A. ahead** (the "a" is pronounced /ə/, while the others vary)
10. **A. stadium** (the "sta" is pronounced differently from the others)

Select the corresponding letters for each identified word based on the sound differences.