- Renewable energy sources are solar energy, wind energy and hydro energy. They can be replaced easily.
- Non-renewable energy sources are coal, oil and natural gas. They can't be replaced after use.
- The advantages of solar energy are clean, available and safe to use. The disadvantage of solar energy is expensive.
- I can use low energy light bulb, turn off all electrical appliances when not using.
- I joined in spring festival.
- I joined the festival in my neighbourhood at Tet.
- People opened a fair with games and stalls along the streets. Festival players stopped by the stalls to had fun and bought souvenirs.
- Yes, I did. Because I had a lot of fun after the festival.
- It's fast, comfortale and convenient
- It's eco-friendly, safe to use and convenient.