Put the sentences into Plural

A.the story teller asked John to drive slowly because rain began to fall
B.John went for a walk because poor sleep
C.“I saw lights of the below the hill” said John after he had run back to the car
D.The unloaded the machine so that it would be easier to push it to the top of the hill
E.They would have spent the night in the car if john had not to seen the light of the town

Example : a child is a boy or girl

Children are boys or girls

1 . A dog is an animal

2. A potato is vegetable

3. he is a student

4. I am doing my homework

5. he was studying when I came

6. she herself writes the letter

7. A business consist of an operation

8. she performs a service by answering a question

9. what is the difference between you & me ?

10. his friend is also my friend

11. the student has almost finished doing it

12. has she ever been studying abroad?
13. The earthquake cause a great disaster

14. does he understand the lesson ?

15. there is a boy & girl in the class.