Ответы:
1. an orange
2. an apple
3. an umbrella
4. a rabbit
5. a bus
6. a university
7. a desk
8. an elephant
9. a sheep
10. a lemon
11. an egg
12. a uniform
13. an igloo
14. a giraffe
15. a banana
16. an uncle
17. a flower
18. an ear
19. a bear
20. a ring
21. an arm
22. a farmer
23. an eye
24. an eraser