----- Nội dung ảnh ----- **Hoàn thành các câu với dạng quá khứ đơn của các động từ trong hộp:**
1. ______ your used books to your local library or charities. 2. ______ a fundraising event to raise money for charity. 3. ______ polluted rivers and lakes. 4. ______ trees or flowers in your backyard or community garden. 5. ______ at a nursing home, soup kitchen, or homeless shelter. 6. ______ plastic and paper for a clean environment. 7. ______ nutritious meals to the poor and needy people. 8. ______ homeless children who are unable to attend school.
