1. What is the plural form of 'sheep'? 2. What kind of noun is river? 3. What is the noun form of the word 'laugh'? 4. A herd of cattle is passing. The underlined word is a/an- 5. Identify the word that remains same in plural form: 6. What is the noun form of the word 'know'? 7. Identify the word that can be used as both singular and plural: 8. Identify the word which remains the same in its plural form: 9. What is the plural number of ovum? 10. What is the plural form of the word louse? 11. Which one of the following word is in singular form? 12. Mutton is a/ an 13. Frailty, the name is women. Here 'Frailty' is - 14. The singular form of 'criteria' is- 15. What is the plural of 'Magus'?