Ai giúp mình mấy câu này với hứa vote 5*

Đáp án:

Giải thích các bước giải:

1. Our volunteering in communities makes a difference.
2. I like to part in volunteer work because I think it is very useful and meaningful to society.
3. We should help the homeless, the elderly and abandoned children.
4. I have been a volunteer for five years.
5. Last week my class volunteered to clean the streets.
6. I felt more confident after participating in volunteer work.
7. My brother has ever donated blood three times before.
8. Every year we collect old books and clothes to help the poor children in the mountainous areas.