1. the amount of water / your family / should / you / uses / reduce

=> You should reduce the amount of water your family uses.

2. it will be / solar power / to save energy / if people / take advantage of / better

=> It will be better if people take advantage of solar power to save energy.

3. to kill / spray pesticides on / the farmes / harmful insects / paddy fields

=> The farmers spray pesticides on paddy fields to kill harmful insects.

4. pleased / you are / that / this semester / I am / working hard

=> I am pleased that you are working hard this semester.

5. fish / we throw / the trash / because of / may be killed / into the water

=> Fish may be killed because of we throm the trash into the water.

1c 

2e

3a

4b

5d

1. c

2. e

3. a

4. b

5. d

1. With her hard work, she can get the best scores.  

➔ If she works hard,  she will get the best scores.  

2. Don’t be lazy or you will fail in the written exam.  

➔ If you are lazy, you will fail in the written exam.  

3. Drive on the left and you will be fined.  

➔ If  you drive on the left, you will be fined

4. Don’t throw trash into the water or you will be heavily fined. 

➔ If  you throw trash into water, you will be heavily fined. 

5. Study harder and you will have good results.  

➔ If  you study harder, you will have good results.  

6. Don’t throw garbage in the street or you will be fined.  

➔ If  you throw garbage in the street, you will be fined. 

7. Protect the environment or we will destroy our lives.  

➔ If  we don't protect the environment, we will destroy our lives.  

8. In the nice weather, we will go to Dalat for our holiday.  

➔ If  the weather is nice, we will go to Dalat for our holiday.  

9. ‘ What aspect of learning English do you find most difficult?’ said the examiner. 

➔ The examiner asked what aspect of learning English I found most difficult

10. ‘ What is your favorite subject?’ said the examiner to Emma. 

➔ The examiner asked Emma what her favorite subject was

1 shortest in our class

2 rubbish into the river, we will make the water dirty

3 the highest of the three girls

4 the rubbish, we will protect the environment

2. I think we should __( collect/send/burn/litter) trash to reduce the amount of garbage we produce a day.
8. We can reduce water pollution by not throwing trash _(onto/into/to/at) the water.

2. I think we should __( collect/send/burn/litter) trash to reduce the amount of garbage we produce a day.
8. We can reduce water pollution by not throwing trash _(onto/into/to/at) the water.

I. Fill in each blank with the correct preposition.

1. Thousands of people were exposed..to. radiation when the nuclear plant exploded.

2. Waste water from many factories which is dumped.into.. water bodies directly causes water pollution.

3. Land pollution is responsible for damage done .to.. natural habitat of animals.

4. Americans throw..away. twenty-eight and a half million tons of plastic in landfills every year.

5. Scientist have come up ..with. new ways of saving energy.

II. Circle the mistake in each sentence, and then correct it.

1. Long exposure to loud noise results->results in permanent hearing loss.

2. The misuse of resources and improper dumping of waste make->cause land pollution.

3. The soil becomes contaminated because->because of the use of so many pesticides and other farming chemicals.

4. Oil slicks from boats or ships pollute the sea, because->therefore many fish and sea birds die.

5. In many developing->developed countries, water pollution is usually a leading cause of death if people drink from polluted water sources.

6. We should plant trees in our neighbourhood so->because trees help cool the planet.

III

The major cause of water pollution in Vietnam is the weakness industrial wastewater management. Many factories..use.. fresh water to carry away waste..from. their plants into canal rivers and lakes. Most of them do not have..any.. wastewater treatment system. Industrial was water is directly discharged into canals, lakes, ponds and rivers, causing serious.pollution. of surface water. For example,..in. 2008, Vedan factory, a sodium glutamate plant, release their untreated industrial wastewater into the Thi Vai River and.caused.. tons of fish and ducks the river to die.

Another cause of water pollution in Vietnam is the lack of awareness among citizens. Every day people genera a lot of..trash. , and they throw it directly into canals, rivers and ponds. They.collect.. water from these sources to do their laundry, wash dishes, bathe and then they throw the dirty water that cointain detergent and shampoo directly into them.