Irregular plural nouns

Irregular plural nouns. Write the plural nouns for the provided singular nouns in English. Remember that some of the nouns belong to uncountable nouns and therefore do not have plural forms. ATTENTION: If the noun cannot be used in plural write 'nie'.
Singular Plural
1. accommodation
2. baby
3. wife
4. piano
5. glass
6. brief
7. cliff
8. rubbish
9. knife
10. brush
11. scarf
12. sheaf
13. donkey
14. fly
15. permission
16. information
17. calf
18.volcano
19.luck
20. kangaroo