Complete each sentences with the correct form of one of the given verbs given.
1. Burning coal and oil ........................ carbon dioxide that harms the environment.
2. Many families ........................ biogas.
3. Using non-renewable energy sources ........................ the environment.
4. Solar power can be ........................ into electricity.
5. There ........................ a shortage of energy in the near future.
6. Producing biogas energy ........................ burning waste, and this may have bad impacts on the environments.
7. Coal is a non-renewable source of energy, because it cannot be easily ........................
8. The wind turns turbines to ........................ energy.
VI Choose the correct answer (A, B, C or D).
1. The wind, the sun, and the wave are some types of .................. sources of energy.
A. changeable B. alternative C. cheap D. costly
2. Remember to .................. the lights before going to bed.
A. turn B. turn on C. turn off D. stop
3. People will reduce energy .................. as much as possible.
A. consume B. consumption C. expense D. expenses
4. Nuclear power is expensive and dangerous .................. our environment.
A. for B. to C. in D. with
5. Human is looking for a clean, cheap and .................. sources of energy.
A. effective B. effect C. effectively D. effectiveness
6. Low energy light bulbs should be used to .................. electricity.
A. spend B. buy C. convert D. save
7. We must .................. the amount of water our family used every day.
A. lower B. reduce C. lessen D. narrow
8. At this time next month we .................. to Ha Long Bay for a holiday.
A. will go B. will going C. will be gone D. will be going
9. By the middle of the 21st century, people in developing countries .................. more renewable energy.
A. uses B. will be using C. used D. have
10. Fossil fuels are very common in our society but they .................. the environment.
A. renew B. provide C. waste D. pollute
VII Give the correct form of the word given to complete the sentence.
1. Tidal energy is renewable, ............................ and clean. (plenty)
2. Wind will be used as an ............................ friendly sources of energy. (environment)
3. There are many ways will be used to solve the problem of .................... (pollute)
4. Solar power can be used to ............................ or cool our houses. (hot)
5. ............................, fossil fuels are harmful to the environment. (fortunate)
VIII Find and correct the mistake in each sentence.
1. You can save the electricity by turn off the lights when not using them....
A B C D
2. He will clean his house at 9 am tomorrow. .........
A B C D
3. My sister will be buying a house in the city center next year. .........
A B C D
4. They will build a five-stars hotel on this street. .........
A B C D
5. A solution for the environment problem will soon be finding by scientists.
A B C D
C. READING 
IX Fill in each blank in the following passage with one suitable word.
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.
X Read the passage and answer the questions given.
Many people still believe that natural resources will never be used up. Actually the world’s energy resources are limited. Nobody knows exactly how much fuel is left. However, we also should use them economically and try to find out alternative sources of power. According to Professor Marvin Burnham of the New England Institute of Technology, we have to start conserving coal, oil and gas before it is too late; and nuclear power is the only alternative.
However, many people don’t approve of using nuclear power because it is very dangerous. What would happen if there were a serious nuclear accident? Radioactivity causes cancer and may badly affect the future generations. The most effective thing is that we should use natural resources as economically as possible.
Answer the questions:
1. Can natural resources be used up someday?
.......................................................................................................................
2. What should we do if we don’t want the natural resources to run out of?
.......................................................................................................................
3. Why don’t people prefer using nuclear power?
.......................................................................................................................
4. What does the radioactivity cause for young people?
.......................................................................................................................
5. What will you do to protect your environment?
.......................................................................................................................
I. report the statements, using the verbs given:
1, '' I can't help you because I have too much to do '' she said:
she said she couldn't help me because she had too much to do '
2, ''I think it's a stupid idea, and it won't work'' said she:
she said she thought it was a stupid idea, and it wouldn't work
3, ''breakfast is served between 7.00 and 9.00'' the receptionist explained:
the receptionist explained that breakfast was served between 7.00 and 9.00
4, ''I went to Oxford University in the 1960s'' he said:
he said he had gone to Oxford University in the 1960s'
5, '' I've never been to America'' she said to me
she told me she had never been to America
II. report the following questions:
1, '' do you want to go out for a meal'' she asked:
she asked me if i wanted to go out for a meal'
2, '' why are you late?'' they asked her:
they asked her why she was late
3, '' can I use your phone?'' asked he :
he asked me if he could use my phone
4,'' where have you come from?'' the customs officer asked:
the customs officer asked me where i had come from
5, '' how long are you going to be on holiday?'' she asked:
she asked me how long i was going to be on holiday
6, ''when do you have to go to work?'' she asked:
she asked me when i had to go to work
7, '' did you post my letter?'' Penny asked me:
Penny asked me if i had posted his letter
8, '' will you be back early ?'' he asked her :
he asked her if she would be back early
III. finish each of the following sentences in such a way that it means exactly the same as the sentence printed before it :
1, '' get on with your work!'' the boss said to me :
the boss told me to get on with my work
2, '' I'm give the money back tomorrow'' said tom
-> tom promised to give the money back the following day
3, ''I'm terribly sorry, I'm late '' said Mai:
-> Mai apologized for being late
4, '' I wouldn't eat too much if I were you, Mary'' said Ann
-> Ann advised Mary not to eat too much
5, ''I am going to write a letter of inquiry tomorrow'' he said
he said he was going to write a letter of inquiry the next day
6, they asked '' could you please send us details of the courses and timetables?''
they asked to send them details of the courses and timetables
7, '' would you like to come to my party tomorrow?'' ann asked me
-> Ann invited me to come to her party the next day
I. report the statements, using the verbs given:
1, '' I can't help you because I have too much to do '' she said:
-> She said she couldn't help me because she had too much to do.
2, ''I think it's a stupid idea, and it won't work'' said she:
-> She said she thought it was a stupid idea, and it wouldn't work.
3, ''breakfast is served between 7.00 and 9.00'' the receptionist explained:
-> The receptionist explained that breakfast was served between 7.00 and 9.00.
4, ''I went to Oxford University in the 1960s'' he said:
-> He said he had gone to Oxford University in the 1960s.
5, '' I've never been to America'' she said to me
-> She told me that she had never been to America.
II. report the following questions:
1, '' do you want to go out for a meal'' she asked:
-> She asked me if I wanted to go out for a meal.
2, '' why are you late?'' they asked her:
-> They asked her why she was late.
3, '' can I use your phone?'' asked he :
-> He asked me if he could use my phone.
4,'' where have you come from?'' the customs officer asked:
-> The customs officer asked where I had come from.
5, '' how long are you going to be on holiday?'' she asked:
-> She asked me how long I was going to be on holiday.
6, ''when do you have to go to work?'' she asked:
-> She asked me when I had to go to work.
7, '' did you post my letter?'' Penny asked me:
-> Penny asked me if I had posted his letter.
8, '' will you be back early ?'' he asked her :
-> He asked her if she would be back early.
III. finish each of the following sentences in such a way that it means exactly the same as the sentence printed before it :
1, '' get on with your work!'' the boss said to me :
-> The boss told me to get on with my work.
2, '' I'm give the money back tomorrow'' said tom
-> tom promised ..to give the money back the following day...
3, ''I'm terribly sorry, I'm late '' said Mai:
-> Mai apologized...for being late....
4, '' I wouldn't eat too much if I were you, Mary'' said Ann
-> Ann advised ...Mary not to eat too much....
5, ''I am going to write a letter of inquiry tomorrow'' he said
-> He said he was going to write a letter of inquiry then.
6, they asked '' could you please send us details of the courses and timetables?''
-> They asked if I could send them details of the courses and timetables.
7, '' would you like to come to my party tomorrow?'' ann asked me
-> Ann invited ...me to come to her party the following day....