Lennie accidentally kills the puppy by petting or squeezing it too hard. Lennie's dream is to take care of rabbits. When the puppy dies, Lennie has no real remorse for the dog- as he's only worried about what George is going to say about the dead dog (and whether or not he'll let Lennie get rabbits). Lennie tries to justify it by saying that dogs aren't rabbits and that it was the dog's fault that it died in the first place. He even considers hiding the body.
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