Choose the best answer1. Solar generation __________ up only 3.3 % of total U.S. generation in 2020. A. made B. makes C. is making D. will make 2. Energy __________ from different forms and essential for everything we do. A. comes - is B. come - be C. came - was D. come – are 3. Trees __________ in carbon dioxide and it in their trunks. A. breathes - store B. breathe - store C. breathe - stores D. breathe – stored 4. The Greeks __________ water wheels to grind wheat more than 2,000 years ago. A. use B. uses C. used D. are using 5. Nowadays, renewable energies __________ on a very important role in the heating market. A. took B. takes C. is taking D. are taking 6. Many countries in the world __________ wind power on a commercial basis today. A. used B. will use C. are using D. uses 7. Now automakers __________ fuels cells that extract hydrogen from gasoline. A. developed B. develops C. are developing D. will develop 8. In the old days, humans __________ on the sun and wood for heat. A. rely B. relies C. are relying D. relied 9. Hydroelectric, wind, solar, biomass and geothermal energy __________ all limitless. A. is B. are C. will be D. was 10. Today, the world's resources __________ at an extremely fast rate. A. are depleting B. depletes C. depleted D. is depleting |