1D 2A 3B 4C 5B

Mk ko chắc lắm nha :<

if we try to save our sources of energy, the won't soon end

unless we try to save our sources of energy or they will soon end.

5. Our sources of energy will soon end if we don't try to save them

=>Unless we try to save our sources of energy, they will soon end

6. Barbare plays chess better than Mike

=>Mike doesn't play chess as well as Barbare.

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IV - Read the following passage, then choose the correct answer to questions 26 - 30. (0,2)
Plants supply man with food clothing, and shelter- his most important needs.
Many of our most useful medicines are also made (26)_________plants. In addition, plants add
beauty and pleasure to our lives. Most people enjoy the smell of flowers, the sight field of waving grain, and
the quiet of a forest. Not (27)_______plants are helpful to man. Some species grow in fields and gardens as
weeds that choke off useful plants. Tiny hits of pollen from (28)_______plants cause such (29)_________as
asthma and hay fever. Other plants destroy millions of dollars (30)_______of crops yearly.
26. A. of B. from C. by D. with
27. A. all B. every C. any D. some
28. A. any B. certain C. most D. all
29. A. accidents B. diseases C. misfortune D. disasters
30. A. worth B. value C. price D. money
V - Choose one sentence that has the same meaning as the root one. (0,4)
31. “Do you know Long’s address?” he asked me.
A. He asked me for Long’s address. B. He asked me if someone knew Long’s address.
C. He asked me if I know Long’s address. D. He asked me if I knew Long’s address.
32. They are building a new bridge over the river.
A. A new bridge is building over the river. B. A new bridge is being built over the river.
C. A new bridge is going to build over the river. D. A new bridge is built over the river.
33. I used to go to the cinema on Sundays.
A. I usually went to the cinema on Sundays. B. I got used to going the cinema on Sundays.
C. I didn’t go to the cinema on Sundays. D. I usually go to the cinema on Sundays.
34. You feel unhealthy because you don’t take any exercise.
A. If you don’t take any exercise, you will feel unhealthy.
B. If you took more exercise, you would feel healthier.
C. If you take more exercise, you will feel healthier.
D. If you were healthier, you would take more exercise.

35. Unless we protect the environment, our life will be badly affected.
A. If we protect the environment, our life will be badly affected.
B. If we don’t protect the environment, our life will be badly affected.
C. If we don’t protect the environment, our life won’t be badly affected.
D. If our life is badly affected, we will protect the environment.

Read the passage below and an answer the question :

We can develop alternative sources of energy,and unless we'll never succeed.instead of burning fossil fuels we should be concentrating on more economic uses of electricity because electricity can be produced from any source of energy. If we didn't waste so much energy,our resources would last longer. We can save more energy by conservativation than we can produce for the same money. Unless we do research on solar energy wind power tidal power hydroelectric plants.... Our fossil fuels will run out and we'll all freeze starve to dealth . Many countries are spending much more time and money on research because the energy from the sun the waves and the winds last forever.we really won't survive unless we start working on cleaner safer scour of energy .

1 Can electricity be produced from any sources of energy?

Yes, it can.

2 What would happen if we didn't waste so much energy?

If we didn't waste so much energy, our resources would last longer.

3 Why are many countries spending much more time and money doing research on energy from the sun the waves and the wind?

Because the energy from the sun the waves and the winds last forever.

4 What will happen unless we start working on cleanr and safer sources of energy?

We really won't survive unless we start working on cleaner and safer scources of energy

Exercise 6 : Choose the best answer for each of the following sentences. 1._____have enough apples, she’ll make an apple pie this afternoon. A.Should she B. If she C. Will she D. Unless she 2.If you_____to me, you wouldn’t have got so much trouble. A. listened B. would listen C. had listened D. Would have listened 3.If you don’t know how to spell a word, you_____ look it up in the dictionary. A. must B. will C. should D. ought 4.If the sun _____, we _____for a walk. A. shines / will go B. shone / will go C. shone / would go D. had shone / would go 5.The campfire _____ if it _____ last night. A. wouldn’t be cancelled / hadn’t rained B. wouldn’t have been cancelled / hadn’t rained C. would have been cancelled / hadn’t rained D. will be cancelled / rains 6.But for our parents, we _____ successful in life. A. will never be B. would never be C. wouldn’t have be D. would have never been 7.If I _____ my wallet at home this morning, I _____ money for lunch now. A. leave / will have B. didn’t leave / would have C. hadn’t left / would have D. hadn’t left / would have had 8.It is too bad, Lam isn’t here. If he _____ here, he _____ what to do. A. were / would know B. is / will know C. had been / would have known D. was / would know 9.If we _____ the plans carefully, we would not have had so many serious mistakes. A. study B. had studied C. studied D. were studying 10.I will never talk to you again _____ you apologize me _____ your being rude. A. if / for B. unless / for C. or / of D. whether / or 11._____if you work harder, you will be sacked. A. Whether B. If C. However D. Unless 12.I think you should stop smoking. A. If I am you, I will stop smoking. B. If I were you, I will stop smoking. C. If I were you, I would stop smoking. D. If I had been you, I would stop smoking. 13.If you take the ice out of the fridge, it _____. A. vaporizes B. melts C. heats D. disappears 14.We should do something to protect water from being polluted _____we will have nothing to drink in the future. A. if B. whether C. or D. unless 15.Let’s knock on their door to see _____home. A. if they’re B. unless they’re C. whether they were D. if they were 16.Unless we _____more snow, we can’t go skiing. A. will have B. have C. have had D. had 17.You’ll fail the exam _____ you start revising. A. if B. until C. when D. unless 18.Unless you wash the car, you _____not drive it at the weekend. A. would B. could C. have to D. may 19.If Peter _____his car before the drive, he _____the problem of out of petrol. A. checked / will not get B. had checked / would not have got C. checks / will not have got D. would be checking / will not have got 20.He stepped on the mine, and it exploded. A.If he doesn’t step on the mine, it doesn’t explode. B.If he doesn’t step on the mine, it won’t explode. C.If he didn’t step on the mine, it wouldn’t explode. D.If he hadn’t stepped on the mine, it wouldn’t have exploded. 21. In my experiments, the liquid is cooled to 32ºF. It always freezes. A.If you cool the liquid to 32 degrees, it froze. B.If you cooled the liquid to 32 degrees, it would freeze. C.If you cool the liquid to 32 degrees, it will freeze. D.If you had cooled the liquid to 32 degrees, it would have frozen. 22.It may rain this afternoon. I hope it doesn’t because I don’t want the match to be cancelled. A. If it rains, the match is cancelled. B. If it rains, the match will be cancelled. C. if it rained, the match would be cancelled D. If it had rained, the match would have been cancelled. 23.Unfortunately, I don’t know Philosophy, so I can’t answer your question. A.If I know Philosophy, I can answer your question. B.If I know Philosophy, I will be able to answer your question. C.If I knew Philosophy, I would be able to answer your question. D.If I had known Philosophy, I would have been able to answer your question. 24._____ there are some more ideas, we can end the meeting now. A. If B. As if C. Unless D. In case 25.If he _____with us now, he _____ the beauty of nature of the National Park. A. is / can enjoy B. was / will enjoy C. has been / would enjoy D. were / could enjoy 26.If they had searched more carefully, they...the watch sooner. A. will find B. would find C. found D. would have found 27.If I had got up early, I _____ to have breakfast now. A. have B.I had C. would have D. would have had 28.I cannot buy a new computer _____ I save enough money. A. if B. even if C. unless D. as if 29.Most people you meet will be polite to you _____. A. if you are polite to them B. if you will be polite to them C. unless you are polite to them D. if you were polite to them 30.If you do so, it _____ the matter worse. A. makes only B. would only make C. will only make D. had only made 31.You _____ English fluently unless you practice it every day. A. will speak B. will not speak C. can speak D. did not speak 32.Hurry up _____ you will miss the bus and be late for school. A. if B. and C. or D. as 33.You will get a good seat if you _____ first. A. come B. came C. have come D. will come 34.Sam will not graduate_____. A. if he passed all the tests B. if he does not pass all the tests. C. unless he passes all the tests D. unless he had passed all the tests. 35.If I had time, I would go with you. A.I am free and surely go with you. B.I am too busy to go with you. C. I will go with you because I have time. D. I am free enough to go with you. 36.If Margaret hadn’t been wearing a seat belt, she.... Injured. A. has been B. would has been C. would be D. would have been 37.If I _____ the rain yesterday, I_____ ill. A. had not caught / would have been B. had not caught / would have not been C. have not caught / were not D. have not caught / would have been 38.He looked frightened as if he _____ a ghost. A. sees B. is seeing C. has seen D. had seen 39.What _____if there _____ a serious nuclear accident. A. will happen / was B. happens / were C. would happen / were D. would happen / had been

Lần sau bn vt thì cách ra cho dễ nhìn nhé~~~~

Choose the best answer for each of the following sentences. 1._____have enough apples, she’ll make an apple pie this afternoon. A.Should she B. If she C. Will she D. Unless she

2.If you_____to me, you wouldn’t have got so much trouble.

A. listened B. would listen C. had listened D. Would have listened

3.If you don’t know how to spell a word, you_____ look it up in the dictionary.

A. must B. will C. should D. ought

4.If the sun _____, we _____for a walk.

A. shines / will go B. shone / will go C. shone / would go D. had shone / would go

5.The campfire _____ if it _____ last night.

A. wouldn’t be cancelled / hadn’t rained B. wouldn’t have been cancelled / hadn’t rained C. would have been cancelled / hadn’t rained D. will be cancelled / rains

6.But for our parents, we _____ successful in life.

A. will never be B. would never be C. wouldn’t have be D. would have never been

7.If I _____ my wallet at home this morning, I _____ money for lunch now.

A. leave / will have B. didn’t leave / would have C. hadn’t left / would have D. hadn’t left / would have had

8.It is too bad, Lam isn’t here. If he _____ here, he _____ what to do.

A. were / would know B. is / will know C. had been / would have known D. was / would know

9.If we _____ the plans carefully, we would not have had so many serious mistakes.

A. study B. had studied C. studied D. were studying

10.I will never talk to you again _____ you apologize me _____ your being rude.

A. if / for B. unless / for C. or / of D. whether / or