1. volcano

2. religious

3. nowadays

4. mountainous

5. tribe

6. competition

7. flights

8. participants

9. competitors

10. attracting

11. participate

12 competition

13 attraction

14 religious

15 attracting

16 produced

17 instructed

18 fertilizing

19 representers

20. fertilizer

21. collection

22 collected

23 volcano

24 instructs

25 mountainous

26 nowadays

27 day

28 flights

29. participants

30. competitors

ii. 

1. Books about animals were being read at 7 o'clock yesterday morning.

2. Was their house was being decorated when you phoned?

3. Was your room being cleaned at this time yesterday

4. An important report was being written in his office

5. Was Tom's homework being done at 10 o'clock last night by him

7. Do you know the girl who was talking to my brother

8. I don't understand the words that/which are written on the envelope

9. People often like cars which/that are made in Japan