singular/plurals

1. A boy has one ball.
2. A girl has one doll.
3. The boys have balls.
4. The girls have dolls.
5. I see a tree in the garden.
6. I see many trees in  the garden.
7. He has a blue pen.
8. He has many pens.
9. The student attends the class.
10. The students attend their classes.
11. This bank has only one branch in this city.
12. State Bank has many branches in this city.
13. Keep this box in the warehouse.
14. Keep these boxes in the warehouse.
15. This dish is very small.
16. These dishes are very big.
17. The Negro eats the potato and the mango.
18. Negroes eat potatoes and mangoes.
19. Man goes to buy mangoes.
20. The lady tells a story to the baby.
21. The ladies tell stories to the babies.
22. The boy knows the way to get the key.
23. The boys know the ways to get the keys.
24. Read the life of a great man everyday.
25. Read the lives of great men daily.
26. Life without a wife is like the kitchen without a knife.
27. Lives without wives are like the kitchens without knives.
28. The thief took away the chain from my wife.
29. The thieves took away the chains from our wives.
30. The chief stands on the roof.
31. The chiefs with their handkerchiefs stand on the roofs.