1. Last year volunteer went to the flooded area and gave free food to many people 

`=>` Phần gave to thêm gạch: "gave/to"

2.  They rebuild houses and also helped people plant trees

3. Many generous people donated money for poor people

4.  When I was a student, I often joined in charitable work

5. I used to travel to remoted areas with  my friends to help people there

6. We stayed in the mountainous areas for weeks

7. We taught the children there to read and write

8. Being a volunteer was a wonderful experience

9. After I graduated I was very busy

10. Now I still do charity in my hometown

`III`

1. Last year, many volunteers went to the flooded area and gave free food to people.

2. They also helped people rebuild houses and plant trees.

3. Many generous people donated money for poor people.

4. When I was a student, I often joined in charitable work.

5. I used to travel to remote areas with my friends to help people there.

6. We stayed in the mountainous areas for weeks.

7. We taught the children there to read and write.

8. Being a volunteer was a wonderful experience.

9. After I graduated, I was very busy.

10. Now I still do charity in my hometown.

`Jeikei`