Answer:
I'm guessing based off of the answers what word is intended to highlighted in the original question as you didn't highlight them in your questions. if I'm wrong then...My apologies. LOL
1. C, out of date
2. C, hidden
3. C, rude
4. D, stubbornly
5. A, obvious
6. A, enraged
7. D, unassuming
8. B, naïve 
9. A, required 
10. C, thorough
11. D, unclear 
12. D, llively 
13. B, periodic.
14. A, shared
15. D, expand 
16. B, bothered
17. C, crucial point 
18. A, fearful - Timid
D, disbelieving - Incredulous 
19. C, competent 
20. A, provisional
21. A, ugly picture? If the word in question is unpleasant this is the closest option.
B, substituted word? If the word in question is euphemism this isn't super accurate at all but it's close, sort of.
22. A, ease
23. C, calls up 
24. A, accelerate 
25. B, credible 
26. C, surmised 
27. D, non-negotiable demand 
28. A, delicate 
29. B, indifferent.
The question for 30 isn't shoing in full on my screen, I can't answer that one. Try looking it up, perhaps? ^.^