UNIT 7 BT MLH 11 KEY Bài tập mai lan hương lớp 11

UNIT 7
WORLD POPULATION
II.
Complete each of the sentences with the correct form of the
verb in the box.
increase expect
decrease
reach
limit
raise
control
populate
support
freeze
1. North America was once widely populated by Native American tribes.
2. The world's population is expected to be over 7 billion by 2010.
3. The population has increased from 1.2 million to 1.8 million.
4. Water freezes at OoC.
5. Parents should control what their kids watch on television.
6. The number of new students decreased from 210 to 160 this year.
7. My family have been raising sheep for over 60 years.
8. How can we support our families on such low wages?
9. Profits are expected to reach £2 billion this year.
10. The role that women could play was socially limitted.
III.
Fill in the blank with a suitable word to complete the passage.
China is the most populous country of the world. Its (1) population is
approximately 1.3 billion people, which is almost 22% of the (2) world
population. The population density is high in the southeast: 43 percent of the
land contains most of its population. A quarter of the population (3) of China
is in the middle and lower parts of the Yangtze River, and the population

density (4) reaches 663 people per square kilometer. Shanghai is China's
largest city, (5) whose population density reaches 2,118 people per square
kilometer.
China's population growth rate has (6) decreased in the past years,
although its population is still increasing. In the 1970s, the government
started to implement birth (7) control programs to the people: late marriage,
late childbearing, a one-child family, and a four-year period between two (8)
births in the countryside where each couple may have more than one child,
According to the report of Major Figures of Population of China, the annual
growth rate of China's population (9) fell from 25.83% (in 1070) down to
11.21% (in 1994) and to 8.77% (in 1999) in the past 20 years. This should be
(10) considered a great success.
IV.
Underline the best answers.
1. If you have left/ left home before I get there, I will/ would meet you at the
airport.
2. How will/ would your father react if you leave/ left school?
3. If you will go/ go to England next month, you will/ must drive on the left.
4. Were/ Was I your doctor, I'd insist that you stop smoking.
5. You may/ might be sorry if you spend/ spent all your money.
6. Will/ Can I use your computer, if I am/ were careful?
7. Will/ Would people be able to fly if they have/ had feathers instead of
hair?
8. If anyone should/ might call, would you please take a message?
9. If your mother is/ were here, I'm sure she won't/ wouldn't let you eat all
those chocolates.
10. Were they not/ Weren’t they rich, they couldn't have gone to the USA
for their holiday.

V.

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
VI.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.

Complete the sentences using one of the following pairs of
verbs. Use the past unreal conditional.
consider - be
go - invite

not promote – leave know - go.
get - not have
find - drive
know - not take
hit - not pull
drive - not happen grow up - learn
If you hadn’t been promoted, Would you have left the firm?
I would have gone to the party last night if I had been invited.
If I had known your father was in hospital, I would have gone to visit
him.
They might have found a better hotel if they had driven a few more
kilometers.
If I had known how difficult the job was, I wouldn’t have taken it.
I'm sure we would have got lost if we hadn’t had a map.
If you had driven more carefully, the accident wouldn’t have
happened.
If you had grown up in Japan, you might have learned Japanese.
I might have considered taking the job if the salary had been higher.
The child would have been hit by a car if her mother hadn’t pulled her
out of the street.
Put the verb into the correct form.
If the earth suddenly stoped (stop) spinning we all would fly (fly) off it.
If you smoke (smoke) in a non-smoking compartment the other
passengers will/ may object (object).
Wouldn’t your parents be (your parents/ not/ be) proud if they could
see you now?
If she hadn’t failed (not/ fail) one of her final exams she wouldn't have
had to spend part of the summer in college.
I’ll lend you War and Peace if I have finished (finish) it before you go on
holiday.

If we worked (work) all night we could/ would finish (finish) in time; but
we have no intention of working all night.
If you had worked harder, you would have passed (pass) your final
exam.
If you want to learn a musical instrument, you should practice
(practise).
There have been a lot of thefts from cars in the city center. If you
leave (leave) your car there, don’t leave (not leave) any valuabIes in it.
I don't have enough money to buy that house. But if I had (have) more
money, I would buy (buy) it.
I got wet because I didn't take my umbrella. However, I wouldn’t have
got (not/ get) wet if I had remembered (remember) to take my umbrella
with me.
I'm broke, but I would have (have) plenty of money now if I hadn’t
spent (not/ spend) so much yesterday.
Tom's hobby is collecting stamps from all over the world. If he travels
(travel) to a new country, he always spends (spend/ always) time
looking for new stamps.


14. I'm doing the test very well now. I wouldn’t do (not/ do) the test well if I
hadn’t revised (not/ revise) thoroughly last night.
15. Would you have taken (you/ take) that job if you had known (know)
that you had to work nights?
VII.
Using the given information, make conditional sentences. Use
if.
1. I don't ride the bus to school every morning because it's always so
crowded.
I would take the bus to school every morning If it wasn't/ weren't always

so crowded.
2. The schoolchildren sowed some seeds, but they forgot to water them so
they didn't grow.
If the school-children hadn't forgotten/ had remembered to water the
seeds, they would have grown.
3. Stop talking or you won't understand the lesson.
If you don't stop talking, you won't understand the lesson.
4. The wind is blowing hard, so we won't take the boat out for a ride.
If the wind wasn't/ weren't blowing hard, we would take the boat out for
a ride.
5. Carol didn’t answer the phone because she was studying.
If Carol hadn't been studying she would have answered the phone.
6. I feel better now because you talked to me about my problems
yesterday.
I wouldn't fee] better now if you hadn't talked to me about my problems
yesterday.
7. Because I don't have enough free time, I can't help my mother with the
housework.
If I had more free time I could help my mother with the housework.
8. Rita is exhausted today because she didn't get any sleep last night.
Rita wouldn't be exhausted today if she had gotten some sleep last
night.
9. I didn't prepare for today's lesson: So it is difficult for me to understand
the teacher's explanation.
It wouldn't be difficult for me to understand the teacher's explanation if I
had prepared for today's lesson.
10. I don't want them to be upset, so I've decided not to tell them what
happened.
They would be upset if I told them what happened.
11. Martin failed his driving test last week because he was very nervous.

If Martin hadn't been very nervous, he wouldn't have fallen/ would have
passed his driving test last week.
12. Go' right now or you'll be late for the train.
If you don't go right now, you’ll be late for the train.
13. Sally doesn't know what she has to do for homework because she was
absent from school on Friday.
If Sally had not been absent from school on Friday, she would know
what she has to do for homework.
14. Olga and Ivan weren't paying attention, so they didn't see the sign

15.

VIII.
1.
2.
3.
4.

5.

6.
7.
8.
9.
10.

11.
12.
13.
14.

marking their exit from the highway.
If Olga and Ivan had been paying attention, they would have seen the
sign marking their exit from the highway.
Paulo is working on two jobs right. now, so he doesn't have time to
help you with your remodeling.
If Paulo wasn't/ weren't working on two jobs right now, he would have
time to help you with your remodeling.
Change the following conditional sentences into reported
speech.
'If I had any money I'd buy you a drink,' she said to me.
She told me if she had/ had had some money she would buy/ would
have bought me a drink.
'If I catch the plane I'll be home by five,' he said.
He said if he caught the plane he would be home by five.
'You should stay in bed if you feel unwell.' my mother said.
My mother advised inc to stay in bed if I felt unwell./My mother said that
if I felt unwell should stay in bed.
'What would you do if you were having a problem with grammar, Jane?'
Anne asked.
Anne asked Jane what she would do/ would have done if she were
having/ had been having a problem with grammar.
'If I'd had my mobile yesterday, I could have contacted you,' Matthew
said.
Matthew said if he'd had his mobile the day before, he could have
contacted me.
'If I were you, I'd stop smoking,' she said to her brother.
She advised her brother to stop smoking.
'If you happen to be in our area, drop in and see us,' they said.
They asked me to drop in and see them if I happened to be in their

area.
'If the baby is a girl what will they call her? he wondered.
He wondered what they would call the baby if it was a girl. .
'If I don't practise my English I won't get any better,' she said.
She said if she didn't practise her English she wouldn't get any better.
'If you press this switch, the computer comes on,' he said to his
students.
He told his students if they press/ pressed that switch, the computers
comes/ came on.
'I'd have been in bad trouble if Jane hadn't helped me,' he said.
He said he would have been in bad trouble if Jane hadn't helped him.
'If you have time, wash the floor,' he said.
He told/ asked me to wash the floor if I had time./ He said that if t had
time I was to wash the floor.
'If the door is .clocked what shall I do?' she asked.
She asked what she should do if the door was/ were locked.
'If we had a calculator, we could work this out a lot quicker,' they said.
They said if they had/ had had a calculator, they could work/ could have
worked that out a lot quicker.


15. 'If you don't apologize, I'll never speak to you again.' he said.
He threatened not to speak to me again if I didn't apologize.
IX.
Complete the second sentence so that it has a similar meaning
to the first.
1. Jack was late to the meeting because his watch was slow.
If Jack's watch hadn't been slow, he wouldn't have been late to the
meeting.
2. Heinrich regret not having gone to art school when he was younger.

Heinrich wishes he had gone to art school when he was younger .
3. We don't live in a big city, so we can't easily get access to the Internet.
If we lived in a big city, we could easily get access to the Internet.
4. 'If your job is so bad, why don't you leave?' she said.
She advised me to leave my job (if it was so bad).
5. I used my calculator; otherwise I'd have taken longer.
Had I not used my calculator, I would have taken longer
6. 'If my car was working I would drive you to the station,' Tom said to his
mother.
Tom told his mother that if his car was working/ had been working he
would drivel would have driven her to the station.
7. Speak to her only if she speaks to you first.
Don't speak to her unless she speaks to you first.
8. If I weren't in my 70s and rather unfit, I might consider taking up squash.
Were I not in my 70s and rather unfit, I might consider taking up squash.
9. 'What will you do if you miss your plane?' she asked.
She asked what I would do if I missed my plane.
10. Return the product to the shop if you have any complaints about it.
Should you have any complaints about the products, return it to the
shop