1. If people can................... wastes, they will save a lot of money.

A. rebuild B. reduce C. reuse D. use

2. In the future, we won't go on holiday to the beach but we............ go on holiday to the Moon.

A. must B.can't C. might D. won't

3............the air is cleaner; people will have less breathing problems.

A. Unless B. When C. If D. Because

4. I might have a smartphone....................... the Internet.

A. surf B. surfing C. to surf D. to surfing

5. '' What can we do ......... air pollution?

A. reducing B. to reduce C. reduce D. to reducing

we/ reuse/ save / If/ waste paper / save/ will/ we / a lot of /.

A. If we reuse waste paper, we will save a lot of money.

B. If we reuse waste paper, we would save a lot of money.

C. If we reuse waste paper, we will to save a lot of money.

D. If we reused waste paper, we will to save a lot of money

Write complete sentences, using the words provided.

1. If/burn rubbish,/produce harmful smoke.

If you burn rubbish, you will produce harmful smoke.

2. If/reuse bottles,/save a lot of money.

3. If/use recycled paper,/save/trees.

4. If/plant trees in the schoolyard,/school/greener place.

5.If/rubbish bin in every class,/classroom/cleaner.

2. We will use fewer cars. We will reduce pollution. 

     If  .

3. We will cycle to school every day. We will keep fitter. 

    If .

4. We will use recycled products. We will save money. 

    If .

5. People will throw rubbish into the right bin. They will keep the environment clean. 

    If .

6. We will turn off the tap when brushing the teeth. We will save a lot of water. 

    If .

7. People will travel more by public transport. The harmful gases in big cities will be reduced. 

    If .

8. We will start at 6.00. We will arrive there before noon. 

    If .

9. The boy eats so may green apples. He will be ill. 

    If .

10. We will use reusable bags for shopping. We will reduce waste. 

    If

Bài tập : Change the sentences into the passive voice

1 . We will use less electricity in the future

2 Students in my school will use public transport when travelling long distances

3 People in the countryside will increase the use of biogas for cooking

4 We will spen less money studying

5 They will build a new bridge in this area next month

6 We will reduce our use of electricity to save money

7 People  in britain will spen a lot of money on heating next year

Choose the correct answers.

7.If people can…………………wastes, they will save a lot of money.

A.reuse B.reduce C.rebuild D.use

8. new technology, we now have super smart TVs, smart phones.

A.Because B.Because of C.Thanks D.Thanks to

9.Robots will do most of the housework, we will have more time for our family.

A. so B.but C.although D. if

10. We should have recycling bins in each classroom for things.

A. use B.reuse C.reused D.reusable

11. If we plant more trees, the will be greener.

A.neighbour B. soil C. air D.neighbourhood

12. All of the machines will have a special card .

A.start B.to start C.starting D.to starting

13.If we all the trees, there will be no more oxygen for us to breathe.

A.cuts B.cut off C.cutting D.cut down

14.We should open all the windows, so we don't use air-conditioners.

A.have B.have to C.needn't D.need

15.Plant more trees in the schoolyard because they will provide shade and the atmosphere fresher.

A. do B. make C. have D. use

16.Our dream house will use only solar energy so that we can make the clean and green.

A.nature B.environment C.kitchen D.home

17.Our dream house will be located the sea.

A. on B. at C. in D.between

18. Don't old things because perhaps you will need them later.

A. throw B. throw away C. throwing D.throwing away

19. causes many breathing problems.

A. Fresh air B. Fresher air C. Polluting air D.Polluted air

20. If you eat fast food, you will be fatter easily.

A. very B. very much C. too much D. most

We know that we will pollute the environment if we do not use materials wisely. People have founded many programmes to save materials and protect the environment. 3Rs is one of them. 3Rs stands for Reduce, Reuse and Recycle. Reducing means we reduce the amount of waste we produce. This is the best way to help the environment. If we do not reduce the waste, we will pollute our environment more seriously. Reusing is using the items again. For example, plastic bags can be reused if it is still new. We should not throw away reusable things but store and use them for other purposes. Recycling is changing the waste materials into new products. For example, we recycle waste paper to make carton boxes. We should recycle as many things as possible. If we reduce, reuse and recycle our resources, we will save energy and money. Moreover, we will help to prevent pollution and global climate change.

1. What will happen if people do not use materials wisely? .....................................................................................................................

2. What does 3Rs stand for? .....................................................................................................................

3. What does "reducing" mean? .....................................................................................................................

4. What will happen if we do not reduce the waste? .....................................................................................................................

5. What is "reusing"? .....................................................................................................................

6. Should we throw away reusable things? .....................................................................................................................

7. What is "recycling"? .....................................................................................................................

8. Can we recycle waste paper to make a new product? .....................................................................................................................

m.n giúp mik với

We know that we will pollute the environment if we do not use materials wisely. People have founded many programmes to save materials and protect the environment. 3Rs is one of them. 3Rs stands for Reduce, Reuse and Recycle. Reducing means we reduce the amount of waste we produce. This is the best way to help the environment. If we do not reduce the waste, we will pollute our environment more seriously. Reusing is using the items again. For example, plastic bags can be reused if it is still new. We should not throw away reusable things but store and use them for other purposes. Recycling is changing the waste materials into new products. For example, we recycle waste paper to make carton boxes. We should recycle as many things as possible. If we reduce, reuse and recycle our resources, we will save energy and money. Moreover, we will help to prevent pollution and global climate change.

1. What will happen if people do not use materials wisely? .....................................................................................................................

2. What does 3Rs stand for? .....................................................................................................................

3. What does "reducing" mean? .....................................................................................................................

4. What will happen if we do not reduce the waste? .....................................................................................................................

5. What is "reusing"? .....................................................................................................................

6. Should we throw away reusable things? .....................................................................................................................

7. What is "recycling"? .....................................................................................................................

8. Can we recycle waste paper to make a new product? .....................................................................................................................

VII. Write full sentences using the given words.

1.      If / burn rubbish, / produce harmful smoke.  

2.      If / reuse these bottles, / save a lot of money.

3.      If / reuse these bottles, / save a lot of money.

4.      If / plant trees in the schoolyard, / school / greener place.

5.      If / rubbish bin in every class, / classroom / cleaner.

IV. Write sentences

1. If you /burn/ rubbish, you / produce /harmful smoke.

2.  If /you/ reuse/ these bottles, you /save /lot / money.

3.  If /students/ use/ recycled paper, they /save / lot / trees.

4.  If /students /plant trees / schoolyard, their school /be / greener place.

5.  If there / a rubbish bin /every class, the classroom /be /cleaner.