Sure! Let's break down the pronunciation of the underlined parts of the words you provided:

1. **A.lIve** - /aɪ/
**b.wIde** - /aɪ/
**c.bIcycle** - /aɪ/
**d.excIting** - /aɪ/
(All have the same sound; no difference here.)

2. **a.fEEt** - /iː/
**b.sEAt** - /iː/
**c.nEAr** - /ɪə/
**d.tEAm** - /iː/
(The word "c.nEAr" has a different sound.)

3. **a.bUsy** - /ɪ/
**b.cIty** - /ɪ/
**c.thInk** - /ɪ/
**d.terrIble** - /ɪ/
(All have the same sound; no difference here.)

4. **a.grEAt** - /iː/
**b.hEAt** - /iː/
**c.chEAk** - /iː/
**d.pEAceful** - /iː/
(All have the same sound; no difference here.)

5. **a.hIstoric** - /ɪ/
**b.expensIve** - /ɪ/
**c.offIce** - /aɪ/
**d.fInally** - /ɪ/
(The word "c.offIce" has a different sound.)

### Summary of the words with different sounds:
1. No different sound.
2. c.nEAr (different sound)
3. No different sound.
4. No different sound.
5. c.offIce (different sound)

If you have any further questions or need additional help, feel free to ask!