1. a lion under the tree.
2. children in the car.
3. a woman in the house.
4. tigers in the cage.
5. mice in the box.
6. mangoes in the basket.
7. an orange in the box.
8. a child in the school.
9. buses on the road.
10. boxes on the chair.
11. an elephant in front of the house.
12. twelve months in a year.
13. oxen in the field.
14. thirty days in a year.
15. an ant on the paper.
16. a teacher in the classroom.
17. one pencil on the book.
18. white geese in the lake.
19. policemen in the police station.
20. benches in the garden.