Choose the best answer to complete the sentences.

III. Choose the best answer to complete the sentences.
1. Son Tung
A. does
2.What should we do to water?
A. cut
B.do
a project on energy source at present
B. take
3/6
D. is doing
C.did
C. save
D. waste
3. The problem with fossil fuels is that they are not
B. limited
C. renewable
D. non-renewable
source of energy is the source that can't be replaced after use.
A. expensive
A. Renewable
B.Natural
5.We are looking for cheap, clean and sources of energy.
A. effective
Befficient
6.We should put on our roof for the heating and hot water.
A solar energy
7.We should use
A. low energy
8. They for a new energy source to replace coal now.
C. Effective
C. serious
D. non-renewable
D. dangerous
D. solar panels
C. cracks
light bulbs in our homes.
Bequipment
B.little energy
C. a bit energy
D. efficient
A. looked
Bare looking
9.Do your parents coal as well as wood to make a fire for cooking?
A. burn
B. heat
10.Many countries in the world wind power on a commercial basis today.
3
C.look
D. looking
C. reserve.
D. produce
C. are using
D. uses
A. used
B. will use
11.Now, automakers fuels cells that extract hydrogen from gasoline.
A. developed
B. develops
C. are developing
D. will develop
12.Now, humans
on the sun and word for heat
A. rely
B. relies
C. are relying
D. relied
13.Look! The students soccer on the school yard.
A. is playing
B. are playing
C. will play
D. paly
15.Solar energy, air and water are
A renewable
B. limited
C. restricted
D. narrow
A. dangerous
B. unsafe
17. energy sources indude water and wind power.
16.Although nuclear power is clean and plentiful, it is not
C. safe
D. renewed
A. Friendly environmental.
B. Environmentally friendly
C. Friendly environment.
B. Environmental friendly