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. In Western countries, energy is cheap. F
2. Consumers can save money by using energy-saving bulbs. T
3. Labeling scheme is a good innovation which helps the European to save money and natural resources. T
4. Ordinary 100-watt light bulbs use a quarter of the electricity of standard bulbs. T
5. North American and European countries are interested in saving money and natural resources. T

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

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

Câu hỏi sai thì phải...

Phải là:

Energy-saving bubls used to be saved elactricty in Vietnam.

1. Why don't you do the homework before class?

→I suggest the homework should be done before class

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

→We suggest using energy-saving bulbs to ave electricity

3. Let's clear up all the trash around the schoolyard.

→I suggest all the trash around the schoolyard should be cleared up

4. We should teach young children to care for the environment.

→I suggest young children should be taught to care for the environment

5. What about buying those products?

→I suggest that we should buy those products

6. Let's teach the children how to protect their health.

→I suggest the children should be taught how to protect their health

7. Let's collect garbage on the beach every morning.

→I suggest garbage on the beach should be collected every morning

8. Why don't we use energy-saving bulbs?

She suggests that energy-saving bulbs should be used

9. The teacher said to us, "Do your homework carefully".

→The teacher suggested that our homework should be done carefully