III.

1.an → a

2.have → has

3.is → are

4.are → is

5.over → on

6.learn → learning

7.learn → learning

8.helping → to help

9.a→∅

10.room → rooms

11.is → are

12.an → a

13.with → of

14.raising → raise

15.many → much

IV.

1.Jane isn't old enough to stay at home alone.

2.what are you going to do next weekend?

3.She has long straight black hair

4.The sun rises in the east and sets in the west

5.There was a large round wooden table in the kitchen

6.There are many different types of books in our school library

7.Dr.lien gave Ba some medecine to make him feel

8.We are going to see a detective movie with our parents this afternoon

9.How far is it from Trang's house to the market 

10,Growing children shouldn't drink tea and coffee because they are not good for them 

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