Lan and Ba are talking about different ways to protect the environment for Earth Day. Lan says students shouldn't throw away food. They should eat averything on their plates. She alsot thinks everyone should pick up trash and put it in the trash can to keep the school clean. Ba reuses his water bottle and fills it with water every morning. He also takes his family's cans to the recycling bin because you can recycle metal. He thinks everyone should reuse and recycle everything they can. Lan and Ba are trying their best to proteet the environment. 1. Are Lan and Ba talking about the different ways to protect the environment? 2. What shouldn't student throw away? 3.Where should we put trash to keep the school clean? 4.What does Ba do with his water bottle? 5.can we recycle metal?