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1. She said that she didn't buy that book. 
2. The boys said that they had to try their best with match. 
3. Her classmate said that Lan was the most intelligent girl in their class. 
4. They told us that their friends would get the award for their highest scores. 
5. He said that he would go to school by bus the next day. 
6. Phong said that he needed to learn more vocabulary.
7. His brother told him that he could use his computer that day. 
8. Mai said that she could not go to the movies with Nam. 
9. Phong asked Peter if he enjoyed reading. 
10. Hoa asked Lan if she liked sports. 

TL:

1. She didn't buy this book

2. We have to try our best to win the match are said the boys

3. Lan is the most intelligent girl in our class are said by her classmate

4. They told us their friends would get the award for the highest scores 

5. He said he'ld go to school by bus the following day 

6. Phong said with he needed to learn more vocabulary 

7. His brother told him could use his computer that day 

8. Mai said to Nam she couldn't go to the movies with him 

9. Phong asked Peter if he enjoyed reading
10. Hoa asked Lan if she liked sports