Giáo án phụ đạo tiếng Anh 12 - Unit 10: Modals

t not 	d. couldn’t 
 You __________ stand up. There are a lot of seats available on the bus.  a. couldn’t b. mustn’t c. needn’t d. might not
This library book is overdue. I _________ better return it today. a. need b. must 	c. might d. had 
Our company provides free advice on the use of our products. You _________ pay us. a. must 	b. have to 	c. needn’t d. mustn’t 
 We ………open the lion’s cage. It is contrary to zoo regulations. a. must 	b. mustn’t 	 c. needn’t 	d. should 
 I …….arrive on time, so please start dinner without me. a. could 	b. may 	c. may not 	d. should 
 "Are these gloves necessary?" "Yes. You….use this chemical without gloves. It will burn your skin" a. must not 	b. don’t have to c. could not 	d. need not 
All the questions …………….. right now. I need time to think over
 a. should have been answered b. can be answered c. mustn’t be answered d. can’t be answered
 The windows ............ cleaning . You haven’t dusted them since last month.
 	a. need 	b. must be 	 c. had better 	d. should be
Carl ………..studied harder; he failed the test again. a. must have 	b. should have 	c. could have 	d. needn’t have 
 "Would you like to go with me to the Williams’ wedding next month?" "I’m not sure. I……. be too busy with school work." a. will 	b. might 	 c. maybe 	d. should 
Jane often wears beautiful new clothes. She _______ be very rich.
a. must 	b. could 	 c. might 	d. needn’t
We……. take a taxi. Otherwise we’ll be late. a. would rather b. had better 	 c. must have d. will have
The trip_________ postponed because the children were all excited about it 
a. could have 	b. should not have been c. must have 	d. had better be
They prayed that their daughter……… be lucky again 
a. may	b. could 	 c. might 	d. could
He ……………all that money so she could save some 
a. didn’t need to spend b. needn’t have spent	 c. shouldn’t spend	d. shouldn’t have spent
They have plenty of time, so they need not …….
a. be hurry 	b. hurry 	 c. to hurry 	d. to be hurry
I ………. poor but happy than rich without happiness	
a. may 	b. had better 	 c. would rather 	d. will be
Tom has just got a job. He ………. be very pleased
a. must	b. might	 c. should	d. will	
Rewrite the sentence in the same meaning:
Perhaps Susan knows the address. (may) 	
->Susan ………………………………………………………...
It’s possible that Joanna didn’t receive my message. (might/ not)
	-> Joanna…………………………………………...........
The report must be on my desk tomorrow. (have to) 
	-> The report……………………………………………..……..
I managed to finish all my work. (able)	
	-> I……………………………………………………………… 
It was not necessary for Nancy to clean the flat. (needn’t) 
	-> Nancy…………………………………………..……...
The best thing for you to do is to sit down . (better)
	-> You…………………………….…………………………….
Smoking is not allowed in the museum. (mustn’t) 	
	-> You…………………………………………………………..
It isn’t necessary to bring an umbrella. The weather is beautiful. (needn’t)
	-> We…………………………………………………………………
May be you will need to buy a ticket for your child. (may) 
	-> You………………………………………………………………..
It is essential that all new soldiers have a medical examination ( must)
	-> All new soldiers……………………………………………………..
 Foreigners don’t have to register for military service. (needn’t)
	-> Foreigners …………………………………………………………
READING PRACTICE
Exercise 1: Choose the word which best fits each gap of the passage.
A. Acid rain will not be an easy problem (1) …………. . As more and more countries become (2) …………. , there will be more and more competition for petroleum for cars, home heating, and industry, while (3) ……………… petroleum contributes greatly (4)……………. acid rain, it is less polluted than coal. Unfortunately petroleum is more (5) ……………. than coal and no one knows exactly (6) …………. petroleum is left. Therefore, there will be a pressure to burn coal for energy. Coal is a (7) …………… dirtier energy source than petroleum. Since we already know how (8) …………. acid rain is, it is important (9) …………… we increase our efforts to find a (10) ………………. source of energy as quickly as possible, so that we can avoid further environmental damage.
1. A. solve	B. to solve	C. solved	D. solving
2. A. industry	B. industrial	C. industrialize	D. industrialized
3. A. firing	B. shooting	C. burning	D. cooking
4. A. to 	B. for	C. at	D. with
5. A. expensive	B. cheap	C. clean	D. dirty
6. A. how many	B. how much	C. how far	D. how long
7. A. so	B. many	C. lot	D. much
8. A. destroy	B. destroyed	C. destruction	D. destructive 
9. A. that	B. if	C. whether	D. which
10. A. polluted	B. polluting	C. non- polluting	D. unpolluting
B. Weather influences the lives of everyone. The climate of every country depends on the position on the earth, its ………(1) from the sea and how high it is. In countries which have sea all ………(2) them, like Great Britain and New Zealand, winters are mild and winters are cool. There is not a huge change from one season to ………(3)
Countries near the Equator have hot weather all year with some ………(4) rain, except in deserts where it rains ………(5) little. Above the desert there are no clouds in the sky , so the heat of the sun can easily warm the ground during 5the day, but it gets very cold at night.
1- A. distance	B. space	C. depth	D. length
2- A. through	B. beside	C. around	D. near
3- A. next	B. another	C. later	D. other
4- A. thick	B. large	C. heavy	D. great
5- A. not	B. quite	C. more	D. very
Exercise 2: Read the passage and choose the best answer among A, B, C or D 
 A. One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human fight in the world today. But acid rain , industrial pollution and garbage have made many sources of water drinkable. Lake reservoirs and even entire seas have become vast pools of poison. Lake Baikal in Russia is one of the largest lakes in the world. It contains a rich varieties of animals and plants, including 1300 rare species that do not exist anywhere else in the world . But they are being destroyed by the massive volumes of industrial effluent which pour into the lake every day. Even where law existed, the government did not have the power to enforce them. Most industries simply ignore the regulations. The Mediterranean Sea occupies 1% of the world’s water surface. But it is the dumping ground for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles off shore.
1. According to the writer, one environmental problem in the world today is…………………
safe water shortage B. Acid rain 	C. population explosion 	D. industrial problems
2. What is the serious problems of Lake Baikal in Russia?
It is polluted by massive volumes of industrial wastes discharged into it.
It contains a rich variety of animals and plants.
It has 1300 rare species that do not exist anywhere else in the world .
The government did not have the power to enforce law and regulations.
3. The word “ massive” almost means:
Limited 	B. A large amount of C. Many D. Minimum
4. What is the message to the readers?
We should take action to protect our water resources.	B. We should limit the use of water resources.
C. We should encourage people to use safe water.	D. We should take all water resources into account.
B. 
Every four or ten years, something happens to the weather system. Everything changes, and scientists don’t understand why.
People call this El Nino. It usually happens at Christmas time and El Nino’s the Spanish name for the baby Jesus
The El Nino that started in 1982 was different from the other recent ones. It caused huge changes in the ocean currents. It caused floods in some areas and droughts in others. There were terrible wind storm and huge ocean waves swept houses into the sea. It did billions of dollars worth of damage. Thousands of people lost their lives and thousand of others were left homeless.
In 1983 the winds, ocean currents and pressure areas started to become normal again. Scientists throughout the world are using satellites and research boars to observe the atmosphere and the ocean. It is a very complicated problem, but if the scientists of the world work together, they should be able to find out the causes of El Nino. Then they will be able to predict what will happen and work to prevent a repeat of the death and destruction of 1982-1983.
1- How often does El Nino happen?
A. every four years	B. every ten years	C. every fourteen yearsD. every four or ten years
2- The El Nino 1982 was ………
A. a small one	B. a different one	C. a drought	D. a storm
3- The El Nino 1982 caused ………
A. droughts	B. floods	C. windstorms	D. all are correct
4- Scientists around the world are ………
A. studying El Nino	B. watching it	C. looking for it	D. worrying about it
5- El Nino ………
A. causes damage	B. is mysterious	C. is a natural phenomenon D. All are correct
C. Read the passage and find the words in the passage which mean:
	There are many sources of pollution in our modern word. At present, the most serious sources are acid rain and car exhaust fumes.
Factory chimneys give out smoke that contains sulphur dioxide and nitrogen oxide. These gases combine with the atmosphere to form sulphuric acid and nitric acid. When it rains, these acids dissolve in the rain and make it acidic. Acid rain is believed to be the worst pollution problem of all. It has harmed aquatic life by turning many lakes into lifeless bodies of water. In these areas, there is no limestone in the rocks to neutralize the acid rain naturally. One remedy is to pump limestone into acid lakes. However, it is not possible to do this on a large enough scale to save all the lakes.
Cars exhaust fumes contain carbon monoxide and lead which are highly poisonous. In big cities, the exhaust fumes build up and pose a health hazard to human beings.
send out: ……………
have or hold something within itself: ……………
melt: …………….
living in or near water: …………………
without life: ………………………
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