Ответ:

1. I - personal pronoun , like -verb , spring- adjective, flowers - noun

2. Spring-noun, is - verb, the - article, first - adjective, season - noun, of- preposition, the - article, year- noun

3. The - article, cat- noun, springs- verb, on -preposition, the -article, mouse- noun.

4. the - article, spring - noun , of - preposition , my - pronoun, watch- noun, is- verb, broken- adjective.

5. The article, cat noun, made verb, a article, spring noun, and conjunction, caught verb, the article, mouse noun

6. Can a modal verb, you pronoun, put verb, a article, botton noun, on preposition, my pronoun, coat noun

7. I pronoun, can't a modal verb, botton verb, my pronoun, coat noun; it pronoun, is verb ,too adverb, tight adjective

8. I pronoun, want verb, you pronoun, to copy verb, these demonstrative adjective , notes noun, in preposition, your pronoun, book noun.

9. Make verb, a article, copy noun, of preposition, these demonstrative adjective, orders noun.

10. The article, child noun, is verb, going verb, cross adjective, the article, road noun.

11. If coordinating conjunction, you pronoun, can't a modal verb, write verb, your pronoun, name noun, put verb, a article, cross noun.

12. Meet verb, me pronoun, at preposition, the article, cross-roads noun.

13. This demonstrative pronoun, is verb, the article, Crown Prince noun, of preposition, Ruritania noun.

14. He pronoun, wears verb, a article ,crown noun, on preposition, his pronoun, head noun.

15. They pronoun, crown verb, the article, kings noun, of preposition, England noun, in preposition, Westminster Abbey noun.

16. I pronoun, have verb, half-a-crown noun, in preposition, my pronoun, pocket noun.

17. I pronoun, haven't verb, any pronoun, doubt noun, about preposition, the article, result noun.

18. I pronoun, doubt verb, whether conjunction, you pronoun, can a modal verb, do verb, this adjective, work noun.

19. The article, boy noun, is verb, a article, very adverb, hard adjective, worker noun.

20. You pronoun, must a modal verb, work verb, hard adverb.