Here are the answers for the phonetics section:

1. C. arrives (the 'a' sound is different from the others).
2. D. pillows (the 'o' sound is different).
3. C. dislike (the 'i' sound is different).
4. B. hotel (the 'o' sound is different).
5. C. mother (the 'o' sound is different).
6. D. city (the 'i' sound is different).
7. D. desert (the 'e' sound is different).
8. C. backpack (the 'a' sound is different).
9. C. often (the 'o' sound is different).
10. C. beautiful (the 'ea' sound is different).

For the second part (II) where you have to find which word does not belong to each group, the choices would be:

1. D. poster (all others are forms of visual representation).
2. D. hill (all others are forms of nourishment).
3. D. hiking (all others are forms of accommodation).
4. D. should (other options are imperatives).
5. D. airplane (other options are forms of time).

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