To help with the pronunciation exercise, here’s the analysis of the underlined parts in each question:

1. **“lives”** (1A) - pronounced /lɪvz/
2. **“than”** (2B) - pronounced /ðæn/
3. **“hot”** (3A) - pronounced /hɒt/

Looking at the options, it seems the underlined words all have different pronunciations, making the identification slightly tricky.

However, you should focus on the sound differences.

- In question 1, **“lives”** has a different vowel sound compared to others.
- In question 2, **“than”** when pronounced normally differs from **“calculation.”**
- In question 3, **“hot”** has the vowel sound /ɒ/ which is distinct.

So the likely correct answers based on the pronunciation differences would be:
1. A (lives)
2. B (than)
3. A (hot)

Please confirm the answers based on the listening of the actual pronunciations, as written might differ in dialects.