Ex1:

1:Water.......................... can make jish die (polluted)

2:We should use energy saving bulbs to save..................(electric)

3:They sell.................... bags at check out (use)

4:They are.................... bin is each class room (recycle)

5:We should go to school by bike to reduce................( pollute)

6: They book the rubbish to the........... centes yesterday( recycle)

7:This city is....................jor its jarm products(jame)

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

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

2. It / important / save / natural resources

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

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

They / use / low energy lights bulbs / home.

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

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

7 . We / should collect / plastic bags / paper / for / recycle

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

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

AE hộ vs bài tập tết :)))
Complete the sentences
1. Scientist/look/alternative/energy/sources

2. I/suggest/not turn/lights/when/room/light enough

3.It/necessary/use/energy-saving bulbs/instead/ordinary bulbs

4.You/reduce/amount/electricity/your family/use

5. If/we/go/waste/water/there/be/a shortage/fresh water

6. Energy-saving bulbs/should/use/save/electricity

7. The solar energy/get/the earth/not provide/enough/power/the world's population

8.I / think/we/turn/all/lights/fans/before/leave/the classroom

9. How about/take/a shower/instead/a bath/save/water

10. If/we/go/litter/enviroment/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)......... is used every day . Nowadays , many (2)............. areas in Vietnam have been electrified , and more (3).............. is needed . If everyone (4) .............. energy , it will quickly run out , (5)............ at school should learn how to (6)......... energy , for example , they should turn (7)............... the electric lights when they leave their classrooms .

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

Bài tập về câu chủ động và câu bị động:

1.People can recycle ties to make pipes or floor coverings.  ->....................................................

2. They will build the new bridge by the end of the year. ->.................................................

3. We should use cloth bags instead of plastic bags. ->.......................................

4. We can use the garbage to make fertilizer. ->.................................

5. We must pay the bill at once. -> The bill.........................................

6.They can make tea with boiled water. ->Tea.........................................

Giúp mình  nha ~ Thanks ~.

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____in a small village.(Happy)
2.You should spend your money and energy as____as possible.(Economy)
3.I want to see the___of environment from the local authority.(protect)
4.We can save natural resources by____bottles and cans.(recycle)
5.The old man walked____to the park.(slow)
6.He is_____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? ___________________________
2.Does Amazon rain forest produce about 30 to 40 percent of the world's oxygen?________________________________________________________________
3.Where are tropical rain forests found?__________________________________
*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.
5.Saving our rain forests is only a national problem.
6.A solution of saving our rain forest must be found by a lot of countries in the world