1 : pollution

2 : electricity

3 : useful

4 : recycling

5 : pollution

6 : recycled

7 ; famous

Use suggestions to write full sentences: to + V -để ( diễn ra mục đích)

1. The energy / from / sun / cheap and clean

-> The energy from the sun is cheap and clean

2. It / important / save / natural resources

-> It is important to save natural resources

3. It / necessary / teach children / the energy saving

-> It is necessary to teach children the energy saving

4. What / people / do / reduce / their household bills / future /

-> What will people do to reduce their household bills in the future ?

They / use / low energy lights bulbs / home.

-> They will use low energy lights bulbs at home

5. Energy - saving appliances / should / be used / save electricity

-> Energy - saving appliances should be used to save electricity

6. We / reduce / our use of electricity / save our energy.

-> We should reduce our use of electricity to save our energy

8. We / have / put / diferent kinds / waste / different places

-> We have to put different kinds of waste at different places

9. Many farmers / use / bio gas / for / cook / at / home

-> Many farmers use biogas for cooking at home

1. Scientists are looking forward to the alternative energy sources

2. I suggest not turning the lights on when the room is light enough

3. It is necessary to use energy-saving bulbs instead of ordinary bulbs

4. You should reduce the amount of electricity your family uses

5. If we go on wasting water, there will be a shortage of fresh water

6. Energy-saving bulbs should be used to save electricity

7. The solar energy that gets to the Earth can't provide enough power for the world's population

8. I think we should turn off all the lights and fans before leaving the classroom

9. How about taking a shower instead of a bath to save water ?

10. If we go on littering, the environment will become seriously polluted

VII . Fill in the blank in the following passage with ONE suitable word from the box :

students ; bulbs ; coal ; off ; rural ; electricity ; natural ; energy ; save ; wastes .

With the development of science and technology , more and more (1)...energy...... is used every day . Nowadays , many (2)......rural....... areas in Vietnam have been electrified , and more (3)....... electricity....... is needed . If everyone (4) ......wastes........ energy , it will quickly run out , (5).....students ....... at school should learn how to (6).... save..... energy , for example , they should turn (7)......off......... the electric lights when they leave their classrooms .

Moreover , we may waste electricity at home if we use a lot of light (8)..... bulbs......... By not wasting energy , we will save a lot of (9) ......natural........... resources , such as (10)....coal...... and oil .

(1) energy

(2) rural

(3) electricity

(4) wastes

(5) students

(6) save

(7) off

(8) bulbs

(9) natural

(10) coal

1. " why don't we use energy-saving bulbs to save electricity?" an said

an suggested that energy-saving bulds...should save electricity.........................................................

2. my father suggested going out for a meal

my father said " shall......we go out for a meal............................................

3. my sister watches more tv than me

i don't......watch TV as well as my sister........................................................

4. if i finish my homework, i can go out at the weekend

unless i ......finish my homework,i can't go out at the weekend........................................................................

I
1.They are_____that people use energy-saving bulbs to save energy.
A.please     B.pleased      C. pleasing      D.pleasure
2.You should turn____ the gas after you have finished cooking.
A.on            B.off               C.up                D.down
3.My mother was very tired,____I helped her with the housework.
A.because  B.although     C.so                 D.but
II
1.They live__HAPPILY__in a small village.(Happy)
2.You should spend your money and energy as__ECONOMICALLY__as possible.(Economy)
3.I want to see the_PROTECTION__of environment from the local authority.(protect)
4.We can save natural resources by__RECYCLING__bottles and cans.(recycle)
5.The old man walked_SLOWLY___to the park.(slow)
6.He is___DISAPPOINTED __beause they have used electricity to catch.(disappoint)
III
Tropical rain forests are found in Amazon region of South Amercia,Central America,Africa,and Southeast Asia.Rain forests are very important to the world's climate.The Amazon rain forest alone receives about 30 to 40 percent of the total rainfall on the earth and produces about the same percentage of the world's oxygen.Some scientists believe that the decresing size of rain forests will affect the climate on earth, making it uncomfortable or even dangerous for life.Saving our rain forests is an international problem.One country or even a few countries can not solve the problem alone. The nations of the world must work together to find a solution before it is to late.
*Answer the questions:

1.How are the rain forests to the world's climate? _____Rain forests are very important to the world's climate______________________
2.Does Amazon rain forest produce about 30 to 40 percent of the world's oxygen?_______No, it doesn't _________________________________________________________
3.Where are tropical rain forests found?_______in Amazon region of South Amercia,Central America,Africa,and Southeast Asia.___________________________
*Decide the following statements are true(T) or false (F).Check the boxes
4.Some scientists believe that life is dangerous because of the decreasing size of     
rain forests. T
5.Saving our rain forests is only a national problem. F
6.A solution of saving our rain forest must be found by a lot of countries in the world  T