*Ex. 23. Fill in the table below according to the way the plural forms are written First element in plural Last element in plural 1. attorney general; 2. notary public; 3. passer-by; 4. assistant director; 5, boy friend; 6. grown-up; 7. sit-in; 8. take-off; 9. forget-me-not; 10. cover-up; 11. show-off; 12. looker- on; 13. bird of prey; 14. comrade in arms; 15. bride-to-be; 16. man-of-war; 17. fountain pen; 18. breakdown; 19. stand-by; 20. spoonful; 21. summing-up; 22. tooth brush; 23. postman; 24. commander-in-chief.

| No. | Singular Form          | First Element in Plural | Last Element in Plural |

|-----|------------------------|-------------------------|-------------------------|

| 1   | attorney general       | attorneys               | general                 |

| 2   | notary public          | notaries                | public                  |

| 3   | passer-by              | passers                 | by                      |

| 4   | assistant director     | assistants              | director                |

| 5   | boy friend             | boy friends             | friend                  |

| 6   | grown-up               | grown-ups               | up                      |

| 7   | sit-in                 | sit-ins                 | in                      |

| 8   | take-off               | take-offs               | off                     |

| 9   | forget-me-not         | forget-me-nots         | not                     |

| 10  | cover-up               | cover-ups               | up                      |

| 11  | show-off               | show-offs               | off                     |

| 12  | looker-on              | lookers-on              | on                      |

| 13  | bird of prey           | birds of prey           | prey                    |

| 14  | comrade in arms        | comrades in arms        | arms                    |

| 15  | bride-to-be            | brides-to-be            | be                      |

| 16  | man-of-war             | men-of-war              | war                     |

| 17  | fountain pen           | fountain pens           | pen                     |

| 18  | breakdown              | breakdowns              | down                    |

| 19  | stand-by               | stand-bys               | by                      |

| 20  | spoonful               | spoonfuls               | ful                     |

| 21  | summing-up             | summing-ups             | up                      |

| 22  | tooth brush            | tooth brushes           | brush                   |

| 23  | postman                | postmen                 | man                     |

| 24  | commander-in-chief     | commanders-in-chief     | chief                   |

Note that the plural forms of these words can vary slightly based on their usage and context.