46. Many countries/ using/ solar energy.
A. Many countries are using the solar energy.
B. Many countries are using solar energy.
C. Many countries is using solar energy.
D. Many countries using the solar energy.
47. save/energy/one/best/way/conserve/natural/resources.
A. Saving energy is one of the best way to conserve natural resource.
B. To save energy are one of the best ways conserving natural resource.
C. To save energy are one of best ways to conserve natural resource.
D. Saving energy is one of the best ways to conserve natural resource.
48. most/ our electricity/ come/ use/ coal, gas, or oil.
A. Most our electricity come from using of coal, gas, or oil.
B. Most our electricity comes from using of coal, gas, or oil.
C. Most of our electricity are coming from the use of coal, gas, or oil.
D. Most of our electricity comes from the use of coal, gas, or oil