Answer:
-throw in the towel
abandon a struggle;admit defeat
Answer:
some comet are very difficult to see because they are made of water and dust and they reflect light very well, so scientists only know about those that make regular appearances, and some comets have not been discovered yet and due to that scientist both sky watchers and strong telescope to report new comets and only them can identify them, although some comet can be seen easily by ordinary people
Explanation:
Although some comet are difficult to see, scientist uses sky watchers to help them to spot them, they also use strong telescope to identify them
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
