3. Which tour does each statement below talk about? Write a, b, c, or d.
(Mỗi câu dưới đây nói về chuyến tham quan nào? Viết a, b, c hoặc d.)
1. You can buy arts and crafts to help protect the environment. _______
2. You can learn how to help protect wildlife. _______
3. This tour is not suitable for families with children. _______
4. This tour offers educational videos about the environment. _______