Read the sentences and cross out the by phrases when they are not necessary.
1. Energy is produced by the solar panels on top of our house.
2. In many countries, a lot of food is wasted by people.
3. Our notebooks are made from recycled paper by factory workers.
4. Eco-friendly cars are powered by electricity, not gasoline.
1. Energy is produced by the solar panels.
2. In many countries, a lot of food is wasted.
3. Our notebooks are made from recycled paper.
4. Eco-friendly cars are powered by electricity.
Hướng dẫn dịch:
1. Năng lượng được tạo ra bởi các tấm pin mặt trời.
2. Ở nhiều nước, rất nhiều thực phẩm bị lãng phí.
3. Sổ tay của chúng tôi được làm từ giấy tái chế.
4. Xe thân thiện với môi trường chạy bằng điện.