Give the correct form of the verbs to complete the sentences
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16.
II. Give the correct form of the verbs to complete the sentences.
15. Non-renewable energy like coal
a lot of air pollution. (cause)
natural resources can reduce air pollution. (use)
badly to our environment now. (affect)
17. People
18. We should
19. Scientists
our energy to protect the environment. (save)
a lot of new types of energy in the future. (create)
21.Because there wasn't electricity in the past, people often
(build)
together to cook. (make)
20. Solar energy is expensive
22. Natural gas is cheap and it is excellent for
23. They
24. All our energy
(cook)
a new power plant in this area last year. (build)
from oil, coal, and natural gas. (come)
fire by hitting rocks
16.
II. Give the correct form of the verbs to complete the sentences.
15. Non-renewable energy like coal
a lot of air pollution. (cause)
natural resources can reduce air pollution. (use)
badly to our environment now. (affect)
17. People
18. We should
19. Scientists
our energy to protect the environment. (save)
a lot of new types of energy in the future. (create)
21.Because there wasn't electricity in the past, people often
(build)
together to cook. (make)
20. Solar energy is expensive
22. Natural gas is cheap and it is excellent for
23. They
24. All our energy
(cook)
a new power plant in this area last year. (build)
from oil, coal, and natural gas. (come)
fire by hitting rocks