Chọn đáp án đúng) 1. This time next month, they _____ a new hydro power station on the river. A. will build B. will be building C. build D. built 2. Our class _____ ways to save energy at home this time next Saturday morning. A. discusses B. discussed C. will be discussing D. will discuss 3. The solar panels_____ in our village next year. A. are installed B. were installed C. is installed D. will be installed 4. In 2030, nuclear power______ in many countries. A. are used B. will be used C. were used D. was used 5. Burning more ______, we will pollute our environment. A. coal B. dioxide C. carbon dioxide D. hydro 6. ______ can be a clean and abundant energy source in Viet Nam. A. Solar energy B. Coal C. Oil D. Fossil fuel 7. If we use more cars, the amount of ______ in the air will continue to rise. A. oxygen B. carbon dioxide C. oil D. coal 8. If we continue to burn ______, we will face a serious shortage of energy. A. fossil fuels B. forests C. wastes D. paper