THEY WORK IN A HOSPITAL SPONSORING BY THE GOVERNMENT. A B...

Câu 30:They work in a hospital sponsoring by the government. A B C D IV. Fill each blank with a suitable word: We need energy to live and work. Our major source of __(31)___ is oil. Oil is one kind of fossil fuel. The amount of fossil __(32)___ in the world is limited. Therefore, we must save it, and at the same time, we must find new sources of energy. Geothermal heat and nuclear power are __(33)___ sources of energy. They can give us electricity. Other alternative __(34)___ are the sun, waves and water. These sources are not only _(35)___ and available but also clean and safe for the environment. People should develop and use them more and more in the future.