Here are the words with underlined parts pronounced differently:

1. A. **games** (pronounced /eɪ/)
B. debate (pronounced /ɪ/)
C. slam (pronounced /æ/)
D. paste (pronounced /eɪ/)

**Different pronunciation:** A. **games**

2. A. **lack** (pronounced /æ/)
B. tag (pronounced /æ/)
C. gangster (pronounced /æ/)
D. jackets (pronounced /ə/)

**Different pronunciation:** D. **jackets**

3. A. **many** (pronounced /ɛ/)
B. manual (pronounced /æ/)
C. any (pronounced /ɛ/)
D. plenty (pronounced /ɛ/)

**Different pronunciation:** B. **manual**

4. A. **delicate** (pronounced /ɛ/)
B. flame (pronounced /eɪ/)
C. jars (pronounced /ɑ:/)
D. **father** (pronounced /ɑ:/)

**Different pronunciation:** A. **delicate**

5. A. **quality** (pronounced /ɑ:/)
B. wander (pronounced /ɑ:/)
C. **quarter** (pronounced /ɔ:/)
D. **whale** (pronounced /eɪ/)

**Different pronunciation:** C. **quarter**

6. A. **warmth** (pronounced /ɔ:/)
B. quarter (pronounced /ɔ:/)
C. water (pronounced /ɔ:/)
D. various (pronounced /æ/)

**Different pronunciation:** D. **various**

7. A. **manage** (pronounced /æ/)
B. passage (pronounced /æ/)
C. marry (pronounced /æ/)
D. **nightmare** (pronounced /aɪ/)

**Different pronunciation:** D. **nightmare**

Thus, each answer has the underlined part with a different pronunciation from the others.