5. Many students don’t turn off the lights when they leave. We use lots of electricity.

2. Many students don’t bring their own water bottles. We won’t reduce plastic pollution.

Write First Conditional sentences. (Viết câu điều kiện loại I.)

1. We don’t recycle more plastic. The environment isn’t better.

3. People don’t reuse plastic bags. There are many plastic bags in rivers and oceans.

4. There’s lots of plastic trash in our school. Many students use single-use plastic.

Bill is talking to Megan about his biology project. Listen and tick the pictures you hear. (Bill đang nói chuyện với Megan về dự án sinh học của anh ấy. Nghe và đánh dấu vào những hình ảnh bạn nghe được.)