The speaker is disappointed.
What is the cause, and what needs to be brought?!
1. went 2. drove 3. arrived, was 4. asked, had 5. said 6. told 7. walked 8. saw 9. stopped, bought 10. is 11. did not go 12. got 13. did, did 14. loved 15. got, had 16. stayed 17. went 18. had 19. was 20. visited 21. were 22. bought 23. saw 24. ate 25. talked 26. returned 27. thought
Answer:
Scientists believe that heat and pressure are two important elements in changing rocks is considered a hypothesis.
Hope this helps! :)