Here are the words that have a different sound in the underlined part:

1. **A. complained** - The "ained" sound is different from the others.
2. **A. announced** - The "oun" sound is different from the others.
3. **A. switched** - The "witched" sound is different from the others.
4. **D. succeeded** - The "ceeded" sound is different from the others.
5. **B. wrapped** - The "apped" sound is different from the others.

So the different words are:
1. A
2. A
3. A
4. D
5. B