II. Choose A, B, c or D that best completes the sentences or substitutes for the underlined word or phrase. 6. Solar energy,

II. Choose A, B, c or D that best completes the sentences or substitutes for the underlined word or phrase.
6. Solar energy, air and water are_______.
A. renewable B. limited C. restricted D. narrow
7. Although nuclear power is clean and plentiful, it is not_______
A. dangerous B. unsafe C. safe D. renewed
8. _______energy sources include water and wind power.
A. Friendly environmental B. Environmentally friendly
C. Friendly environment D. Environmental friendly
9. Solar energy can be changed into_______.
A. electricity B. electric C. electrician D. electrical
10. Hydroelectric power is produced by the fall of_______ trapped into a dam.
A. air B. soil C. wind D. water
11. Our major source _______energy is oil.
A. from B. of C. in D. for
12. The amount of fossil fuels_______the world is limited.
A. on B. for C. of D. in
13. What do you need energy_______?
A. to B. for C. at D. by
14. When water moves _______a high place to a lower place, it makes energy.
A. with B. on C. from D. at
15. Many countries use solar energy_______ their daily life.
A. with B. into C. in D. for