What are the answers to the grammar questions in the image?

Here are the answers to the grammar questions: 1. B (has gone) 2. C (climb) 3. A (discovered) 4. A (Have) 5. B ('ll take) 6. A (falls) 7. B (is) 8. A (he arrived) 9. B (had) 10. B (Will) 11. B (started) 12. C (went) 13. A (hasn't) 14. A (invented) 15. A (will be) 16. B (some) 17. C (have travelled) 18. B (haven't) 19. C (wasn't) 20. C (hasn't) 21. B (since) 22. C (brought) 23. B (didn't) 24. C (Has he lived) 25. B (hasn't been)