Complete the sentences with the correct form of the words in capitals

1. Healthy eating is of great [ ] to professional athletes.
2. Dumping waste into rivers is [ ] harmful to the surrounding area.
3. The old man felt [ ] and helpless after the loss of his wife.
4. She planned, quite [ ], to climb Mount Everest.
5. The informer gave the [ ] some valuable information.
6. It is advisable to think carefully before coming to a [ ].
7. Woody Allen is a [ ]-respected film director.
8. Ice hockey is an [ ] action-packed sport.
9. They are making preparations for the construction of an [ ] park in my town.
10. [ ] for us, that department store offers free delivery.
11. The children [ ] put all the decorations on the Christmas tree.
12. His [ ] to do the job well got him the promotion.
13. The doctors were deeply [ ] about the inhabitants' health after the epidemic.
14. The countless ants on the beach were a [ ] sight.
15. The staff expressed their [ ] and support of the new policy at the meeting.
16. I will have to give some [ ] to the arrangements for the wedding.
17. There are many cultural differences among the countries in the [ ] Union.
18. I'm afraid your choice of clothing is [ ] for the occasion.
19. Famous [ ] usually feel nervous just before a live performance.
20. The actor [ ] broke his agreement with the production company.
21. It is unclear as to when the [ ] will take place.
22. His inability to use good [ ] caused the accident.
23. Milk is vital for the [ ] growth of babies.
24. There is a lot of [ ] as to the existence of UFOs.
25. They are uncertain as to what [ ] should be taken.
26. Because the patient's condition is still [ ], additional observation is necessary.
27. Research shows that there is a direct [ ] between stress and high blood pressure.
28. Relatively speaking, there are [ ] planets in the universe.
29. The truth can sometimes be [ ].
30. The discovery of antibiotics cured many [ ] diseases.