giúp tui zớiii ----- Nội dung dịch tự động từ ảnh ----- Exercise 4. Change these single countable nouns into plural nouns like this way: Ex: a book → books an apple → apples 1.a man 2. an architecture → 3. an umbrella → 4. an ox → 5. a baby → 6. a woman 7. a child → 8. an ant → 9. a half→ 10. a life → 11. a key 12. an ink-pot → 13. a goose → 14. a watch → 15. a play → 16. a boss → 17. an interesting book → 18. a good teacher → 19. an expensive pen 20. an intelligent student