soan tiếng anh lớp 7 sách mới unit 3 bài looking back
III. Điền giới từ.
1. Tom Holden worked a volunteer at a charity in 2010.
2. They provided housing and other supports homeless people.
3. Some volunteers enjoy helping elderly people living nursing homes.
4. She donated thousands of pounds children's charities.
5. The benefits volunteering are enormous to you, and your community.