40. Energy is very important for life.
41. But many sources of energy are non-renewable so we need to protect.
42. There are a lot of ways to safe energy.
43. We should use energy more efficiently by using low energy light bulbs.
44. We should turn off lights before go to bed.
nếu thấy hay, hãy cho mình 5*, cảm ơn và câu trả lời hay nhất để mình có động lực giải bt tiếp nhé