1. We should ______ our carbon footprint to protect the environment.
A.pollute
B.protect
C.reduce
D.endanger
2. You should turn off devices that you are not using to ______ electricity.
A.save
B.reuse
C.release
D.turn
3. "Carbon footprint" is the amount of carbon dioxide that we ______ into the environment.
A.stop
B.plant
C.recycle
D.release
4. People shouldn't throw away single-use products but ______ them.
A.endanger
B.recycle
C.protect
D.pollute
5. Americans throw ______ twenty-eight and a half million tons of plastic in landfills every year.
A.in
B.at
C.to
D.away
6. The people in my village often ______ down trees to build houses.
A.cut
B.pollute
C.avoid
D.release
7. You shouldn't dump the rubbish into the river to reduce ________ pollution.
A.air
B.water
C.carbon
D.campfire
8. Forests help release oxygen and absorb __________________.
A.carbon dioxide
B.global warming
C.environmental protection
D.water pollution
9. We can take part in activities like picking ______ and planting trees to protect nature and the environment.
A.up
B.about
C.down
D.to
10. A number of cleaning products contain ______ chemicals.
A.safeful
B.helpful
C.harmful
D.hopeful
11. The gases from the exhausts of cars have also increased ______ pollution in most cities.
A.land
B.sand
C.water
D.air
12. The death rate would ______ if hygienic conditions were improved.
A.decrease
B.increase
C.be
D.up
13. When radiation goes into the land, air or water, it is called radioactive ______.
A.pollution
B.polluted
C.pollutants
D.polluting
14. The roads were slippery ______ it started to rain.
A.so
B.as soon as
C.when
D.before
15. I sleep with the window open ______ it's really cold.
A.if
B.unless
C.as
D.before
16. He was talking about the film ______ he saw last night.
A.that
B.how
C.who
D.when
Cho điểm cao nhma pk đúng nha mn, mik soi kĩ lắm ó :3
