BT LUYEN UNIT 7 (3)

More exercise (ADDING) - Unit 7: WORLD POPULATION
1. ______ more information, please telephone our main office.
a. If you will need b. Should you need c. You should need d. If you needed
2. It's time governments ______ something to limit population growth.
a. do b. did c. have done d. will do
3. I'd really like to do accounting. If only I ______ so poor at maths.
a. am not b. weren't c. hadn't been d. wouldn't be
4. She wouldn't have gone to university ______.
a. if her parents had insisted b. were her parents not insisted
c. unless her parents had insisted d. only if her parents hadn't insisted
5. John said if he ______ any money he me a drink.
a. has - will buy b. had - would have bought
c. has had - would buy d. had had - would have bought
6. If it ______ more humid in the desert of the Southwest, the hot temperature would be unbearable.
a. is b. would be c. were d. had been
7. If it keeps on raining, the basketball game ought ______.
a. to postpone b. to be postponed c. postpone d. be postponed
8. Only if you get the theater early ___ a chance to get a ticket for tonight's performance.
a. you will have b. have c. you have d. will you have
9. If she ______ sick, she would have gone out with me to the party.
a. hasn't been b. wasn't c. weren't d. hadn't been
10. ______ been diverted, they would have arrived early.
a. Had the plane not b. Hadn't the plane
c. The plane had not d. The plane not had
11. If the ball .......... the line, that would have been the end of the game.
a. would cross b. will cross c. had crossed d. crossed
12. …………………interested in that subject, I would try to learn more about it.
a. Were I b. Should I c. I was d. If I am
13. It would have been a much more serious accident …………fast at the time.
a. had she been driving b. was she driving
c. she had driven d. she drove

14. “Can I borrow your car for this evening?” “Sure, but Nora’s using it right now. If she……………it
back in time, you’re welcome to borrow it”
a. brought b. would bring c. will bring d. brings
15. I didn’t get home until well after midnight last night. Otherwise, I … your call.
a. returned b. had returned c. would return d. would have returned
16. If someone knocked a candle over, it ...................... a fire.
a. will start b. started c. would start d. would have started
17. If you .................... told us about the bad service, we would have eaten there.
a. hadn’t b. don’t c. didn’t d. wouldn’t have
18. What would Tom do if he ............................... the truth?
a. would know b. knows c. had known d. knew
19. If I ........................ you were sick. I would have called sooner.
a. knew b. had known c. know d. would have known
20. If there ......................... a row, I’m going to keep out of it.
a. will be b. is c. were d. had been
21. If I ........................... you, I’d call and apologise.
a. am b. were c. would be d. was
22. Jack will win the election if he ......................... harder.
a. will campaign b. would campaign c. campaigned d. campaigns
23. If I could speak Spanish, I ………………next year studying in Mexico.
a. would spend b. would have spent c. had spent d. will spend
24. If I ……………….the same problems you had as a child, I might not have succeeded in life as well
as you have.
a. have b. would have c. had had d. should have
25. I ………………you sooner than someone told me you were in hospital.
a. would have visited b. visited c. had visited d. visit
26. …………..more help, I could call my neighbor.
a. Needed b. Should I need c. I have needed d. I should need
27. …………………..then what I know today, I would have saved myself a lot of time and trouble over
the years.

a. Had I known b. Did I know c. If I know d. IF I would know
II. Choose the underlined part that needs correcting:
28. If the question were not so difficult, I will be able to answer it.
29. If I were you, I didn’t buy that old building.
30. I get a bad mark. I wish I did my homework last night.
31. The house painted more than three years ago, but I’m not going to have it done again for a while.
32. Some mistakes were made in the brochure, but they might corrected before you get back.
33. If you were here yesterday, you would have seen Jean.
34. We should visit that part of the country if it will be spring.
35. If I will make a difficult decision, I always discuss it with my friends.
36. We could had done more if we had had more time
37. He said that if he has more time, he would come to see us.
III. Put the verbs in parentheses into the correct form.
38. If the woman (say) ..... what she wanted, I wouldn’t have put the phone down.
39. If they arrived in time, they (see) ................................. the ceremony.
40. If you (ask).................................... me, I would explain it to you.
41. If someone (walk).................... in here with a gun, I would be very frightened.
42 I’m sure he (understand) ............................. if you explain the situation to her.
43. If she hadn’t walked to the meeting, she (not be)................................... late.
44. He always (complain) .................................... if I’m late.
45. If he spoke more clearly, we (understand) ................................... him.
IV. 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.
_______________________________________________________________________________
2. The schoolchildren sowed some seeds, but they forgot to water them so they didn't grow.
_______________________________________________________________________________
3. Stop talking or you won't understand the lesson.
_______________________________________________________________________________
4. The wind is blowing hard, so we won't take the boat out for a ride.
_______________________________________________________________________________

5. Carol didn’t answer the phone because she was studying.
_______________________________________________________________________________
6. I feel better now because you 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.
_______________________________________________________________________________
8. Rita is exhausted today because she didn't get any sleep last night.
_______________________________________________________________________________
9. I didn't prepare for today's lesson: So it is difficult for me to understand the teacher's explanation.
_______________________________________________________________________________
10. I don't want them to be upset, so I've decided not to tell them what happened.
_______________________________________________________________________________
11. Martin failed his driving test last week because he was very nervous.
_______________________________________________________________________________
12. Go' right now or 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
_______________________________________________________________________________
14. Olga and Ivan weren't paying attention, so they didn't see the sign marking their exit from the
highway.
_______________________________________________________________________________
15. Paulo is working on two jobs right now, so he doesn't have time to help you with your remodeling.
_______________________________________________________________________________
V. Change the following conditional sentences into reported speech.
16. 'If I had any money I'd buy you a drink,' she said to me.
_______________________________________________________________________________
17. 'If I catch the plane I'll be home by five,' he said.
_______________________________________________________________________________
18. 'You should stay in bed if you feel unwell.' my mother said.
_______________________________________________________________________________

19. 'What would you do if you were having a problem with grammar, Jane?' Anne asked.
_______________________________________________________________________________
20. 'If I'd had my mobile yesterday, I could have contacted you,' Matthew said.
_______________________________________________________________________________
21. 'If I were you, I'd stop smoking,' she said to her brother.
_______________________________________________________________________________
22. 'If you happen to be in our area, drop in and see us,' they said.
_______________________________________________________________________________
23. 'If the baby is a girl what will they call her? he wondered.
_______________________________________________________________________________
24. 'If I don't practise my English I won't get any better,' she said.
_______________________________________________________________________________
25. 'If you press this switch, the computer comes on,' he said to his students
_______________________________________________________________________________
26. 'I'd have been in bad trouble if Jane hadn't helped me,' he said.
_______________________________________________________________________________
27. 'If you have time, wash the floor,' he said.
_______________________________________________________________________________
28. 'If the door is .clocked what shall I do?' she asked.
_______________________________________________________________________________
29. 'If we had a calculator, we could work this out a lot quicker,' they said.
_______________________________________________________________________________
30. 'If you don't apologize, I'll never speak to you again.' he said.
_______________________________________________________________________________
VI. Complete the second sentence so that it has a similar meaning to the first.
31. Jack was late to the meeting because his watch was slow.
If _______________________________________________________________________
32. Heinrich regret not having gone to art school when he was younger.
Heinrich wishes
33. We don't live in a big city, so we can't easily get access to the Internet.

If ________________________________________________________________________
34. 'If your job is so bad, why don't you leave?' she said.
She _______________________________________________________________________
35. I used my calculator; otherwise I'd have taken longer.
Had ________________________________________________________________________
36. 'If my car was working I would drive you to the station,' Tom said to his mother.
Tom told _______________________________________________________________________
37. Speak to her only if she speaks to you first.
Don't _______________________________________________________________________
38. If I weren't in my 70s and rather unfit, I might consider taking up squash.
Were _______________________________________________________________________
39. 'What will you do if you miss your plane?' she asked.
She asked __________________________________________________________________
40. Return the product to the shop if you have any complaints about it.
Should _______________________________________________________________________
Read and answer the questions: GV tu dat cau hoi
1. No one knows the limits of population that the earth can support. Thomas Malthus, an English
economist, developed a theory that became widely accepted in the nineteenth century. He suggested that
because world population tended to increase more rapidly than the food supply, a continual strain was
exerted upon available resources. Malthus cited wars, famines, epidemics, and other diseases as the usual
limitations of population growth.
With recent advances in science and technology, including improved
agricultural methods and great strides in medicine, some of the limiting factors in population growth
have been lessened, with obvious results.
International organizations have put forward several recommendations to alleviate the problem of
overpopulation, including an increase in food production, general economic development in target areas,
and a decrease in birth rate. Most experts agree that it will be necessary to combine all three
recommendations in an effort to affect a lasting solution.
2. The dramatic growth of the world's population in the twentieth century was on a scale without
parallel in human history. Most of this growth had occurred since 1950 and was known as the population

'explosion'. Between 1950 and 1980 the world population increased from 2.5 to over 4 billion, and by the
end of the twenty century the figure had risen to about 6.6 billion. Growth of this size cannot continue
indefinitely. Recent forecasts suggest that the total population will level out at between 10 and 15 billion
in the mid twenty first century. Already there are encouraging signs that the rate of increase in many less
developed countries is beginning to slow down.
- scale: quy mo - without parallel: khong co gi sanh duoc