Give the plural of the following nouns

----- Nội dung dịch tự động từ ảnh -----
EXERCISE I. Give the plural of the following nouns.
1. proof.
2. genius
3. man nurse
6. index
7. nucleus
10. louse
14. Negro
5. baby-sitter
9. American
13. bamboo
11. goose
15. grief
EXERCISE II. Give the plural of the following nouns:
1. aircraft
2. symposium
3. biro
5. sor in-law
6. cannon
9. forum
10. Swede
13. tsunami
14. staff
FYERCISE F
7. cactus
11. octopus
15. window-pane
4. mouthful
8. sergeant-major
12. parenthesis
16. analysis
4. wom in scientist
8. sauna
12. kangaroo
16. rhinocero