Dạy thêm Tiếng Anh 9

I- Join each of the following pairs of sentences with “or” , “and” , “but” , “so” or “because”
1- I told a joke. Nobody laughed.
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2- You must study harder. you will go into another class.
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3- The city suffers from air pollution. The city suffers from water pollution.
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4- I knew her family. I did what I could for her.
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5- We can’t afford energy-saving light bulbs. The light bulbs are too expensive.
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VII- Choose the correct connectives in brackets :
I opened the door ....................................................... looked out. (and / but)
She’s working late today..............she can’t come to the party. (so/ because)
Nam’s bike was broken......................he borrowed mine. (so / because)
The air is polluted.........................there’s too much traffic. (Therefore / because)
We looked everywhere. ............, we could not find the keys. (However / Therefore)
Minh tried to read the book..................... he couldn’t understand it. (but / or)
The bus fare is expensive. ............................., I prefer to walk. (However / Therefore)
The road was under water. ......................, the police closed it to traffic. (Therefore / so)
There were many people at the concert, .................. we couldn’t get seats. (so / however)
We haven’t got a car...................we’ve got a motorbike. (and / but)
I read the book, .................................. did not understand it. (but / or)
Which color do you want blue, red, yellow, ..................... grey? (or / so)
We had to wait ..................................................... we arrived early. (because / so)
They went to Africa.......... they wanted to study the wild animals. (so / because)
I would like to go swimming. ......., I have too much work to do. (However / Therefore)
I go for a walk ............................. the sun is shining. (because / so)
They went to town.......................... bought a lot of clothes. (and / so)
Nam isn’t English........................., he speaks English perfectly. (Therefore / However)
Do you know his address ......................... telephone number ? (but / or)
I like Mary very much, ................. I don’t like her brother. (and / but)
II. Choose the correct answer.(a, b, c, or d)
1. I suggest you should _____________ harder on your pronunciation.
a. work b. to work c. working d. worked
2. The air won’t be better if the exhaust fume _________ limited.
a. is b. are c. isn’t d. aren’t
3. Is he a teacher __________ a singer? – A singer.
a. and b. or c. so d. but
4. The amount of electricity will be ______ if we use energy-saving bulbs.
a. reduced b. reduce c. reducing d. to reduce
5. She is very tired. _________, she has to continue to work.
a. but b. and c. Therefore d. However
6. The baby laughed _____________ as she played with her toys.
a. happy b. happyly c. happiness d. happily
III. Read the text and decide True (T) or False (F)
At the present, most of our electricity comes from the use of coal, gas, oil or nuclear power. This power could be provided by the sun. One percent of solar energy that reaches to the Earth is enough to provide power for total population.
Many countries have already used solar energy. Solar panels are placed on the roof of a house and people use the sun’s energy to heat water and so on. The energy can be stored for a number of days. Therefore, on cloudy days you can use it, too. Solar energy is a cheap, clean, effective source of power and it doesn’t cause pollution, so it is encouraged to use this energy instead of other ones.
True/ False statements:
____ 1. Coal is a kind of electricity coming from the sun.
____ 2. Solar energy is a clean and we don’t care about its shortage.
____ 3. Solar panels are used to heat water.
____ 4. On sunny days we can get the energy and save for the cloudy days.
IV. Read the following passage and do exercise below it
Air pollution is caused of ill health in human beings. In a lot of countries, there are laws limiting the amount of smoke which factories can produce although there is not enough information on