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1. After a month, Hoa got used to ..... in her new school.
A. study B. studying C. studied D. is studying
2. She told me .... up too late.
A. don't stay B. not to stay C. not stay D. to not stay
3. Her son was absent from school .... of his illness last Tuesday.
A. because B. instead C. though D. but
4. That child .... to go t once.
A. will B. had better C. has D. have
5. The front yard is ... to play soccer in.
A. small too B. so small C. too small D. very small
6. My brother feels ... again after his operation.
A. strongly B. strength C. strong D. enough strong
7. He doesn't enjoy ..... basketball
A. to play B. plays C. played D. playing
8. This form must have the ... of the writer.
A. to sign B. signature C. signing D. sign
9. Jane and Jack stood in front of the mirror and locked at .......... .
A. herself B. himself C. theirselves D. themselves
10. Susan is the ... of the three girls.
A. prettier B. prettiest C. pretty D. prettily
11. ..... the beginning of the day called morning or evening?
A. Is B. Are C. Does D. Can
12. Nam ..... familiar with getting up early in winter two years ago.
A. was B. were C. is D. has been
13. The school yard was ... with students.
A. crowd B. crowds C. crowded D. crowding
14. There are new born ... of our farm.
A. calf B. calves C. calfes D. calfs
1. After a month, Hoa got used to ..... in her new school.
A. study B. studying C. studied D. is studying
2. She told me .... up too late.
A. don't stay B. not to stay C. not stay D. to not stay
3. Her son was absent from school .... of his illness last Tuesday.
A. because B. instead C. though D. but
4. That child .... to go t once.
A. will B. had better C. has D. have
5. The front yard is ... to play soccer in.
A. small too B. so small C. too small D. very small
6. My brother feels ... again after his operation.
A. strongly B. strength C. strong D. enough strong
7. He doesn't enjoy ..... basketball
A. to play B. plays C. played D. playing
8. This form must have the ... of the writer.
A. to sign B. signature C. signing D. sign
9. Jane and Jack stood in front of the mirror and locked at .......... .
A. herself B. himself C. theirselves D. themselves
10. Susan is the ... of the three girls.
A. prettier B. prettiest C. pretty D. prettily
11. ..... the beginning of the day called morning or evening?
A. Is B. Are C. Does D. Can
12. Nam ..... familiar with getting up early in winter two years ago.
A. was B. were C. is D. has been
13. The school yard was ... with students.
A. crowd B. crowds C. crowded D. crowding
14. There are new born ... of our farm.
A. calf B. calves C. calfes D. calfs
26. The...........can’t fix the washing machine until tomorrow
A. postman B. walkman C. repairman D. chairman
27. Each year,............destroys homes and injures children
A. fire B. match C. kitchen D. soft drink
28. The children are old enough to look after..............
A. themselves B. ourselves C. herself D. for themselves
29. What was wrong with you ? Why..................go to the hospital ?
A. had you to B. did you have to C. must you D. did you must
30. Students...............their homework after class.
A. have to doing B. have do C. have to do D. have to be done
31. Did you succeed..............the problem ?
A. to solve B. on solving C. in solving D. solving
32. Let’s ..............the couch opposite the armchair in the living room
A. to putting B. putting C. to put D. put
33. A. Did they themselves do this job yesterday ?
B. Did they themselves this job yesterday ?
C. Did they do themselves done this job yesterday ?
D. Have they done themselves this job yesterday ?
34. No one helped Lan to draw the picture. He did it...............
A. by him B. by himself C. lonely D. all lonely
35. She worked hard..............she could pass the final exams
A. so that B. in order to C. as result D. so as to
Question VI: Choose one suitable preposition to complete each following sentence
36. There is a bus station...............the end of the road
A. at B. in C. on D. to
37. I lost my key somewhere..............the car and the house
A. above B. between C. among D. under
38. Don’t shelter..........the trees when it is raining
A. on B. to C. under D. in
39. Keep those medicines................the children’s reach
A. out off B. in of C. on of D. out of
40. The boat sank...............the waves
A. under B. beneath C. on D. above
26. The...........can’t fix the washing machine until tomorrow
A. postman B. walkman C. repairman D. chairman
27. Each year,............destroys homes and injures children
A. fire B. match C. kitchen D. soft drink
28. The children are old enough to look after..............
A. themselves B. ourselves C. herself D. for themselves
29. What was wrong with you ? Why..................go to the hospital ?
A. had you to B. did you have to C. must you D. did you must
30. Students...............their homework after class.
A. have to doing B. have do C. have to do D. have to be done
31. Did you succeed..............the problem ?
A. to solve B. on solving C. in solving D. solving
32. Let’s ..............the couch opposite the armchair in the living room
A. to putting B. putting C. to put D. put
33. A. Did they themselves do this job yesterday ?
B. Did they themselves this job yesterday ?
C. Did they do themselves done this job yesterday ?
D. Have they done themselves this job yesterday ?
34. No one helped Lan to draw the picture. He did it...............
A. by him B. by himself C. lonely D. all lonely
35. She worked hard..............she could pass the final exams
A. so that B. in order to C. as result D. so as to
Question VI: Choose one suitable preposition to complete each following sentence
36. There is a bus station...............the end of the road
A. at B. in C. on D. to
37. I lost my key somewhere..............the car and the house
A. above B. between C. among D. under
38. Don’t shelter..........the trees when it is raining
A. on B. to C. under D. in
39. Keep those medicines................the children’s reach
A. out off B. in of C. on of D. out of
40. The boat sank...............the waves
A. under B. beneath C. on D. above
A. Choose the best answer:
1. ________ having the best qualifications among all the applicants, Justin was not offered the job
A. Although B. While C. In spite of D. Despite of
2. ________ the internet is very popular, many older people do not know how to use it
A. However B. Nevertheless C. Even though D. Despite
3. _________ he wasn’t feeling very well, David was determined to take part in the inter-university athletics meet.
A. Although B. While C. Where as D. yet
4. __________ what Megan prepared for the job interview, she didn’t pass it.
A. Despite of B. In spite of C. Though D. However
5. Bruce was not praised_________ he was a hard worker.
A. despite B. in spite of C. although D. no matter how
6. It looks like they are going to succeed_________ their present difficulties.
A. despite B. although C. in spite D. even though
7. Mary usually goes to parties. She likes meeting people and crowded places ________she is rather shy.
A. In spite of B. Even though C. On the contrary D. In other words
8. Ann: Have you decided to get the job? Terry: Yes, I’ve just decided. I’ll accept that job_________ it is not suitable with my major. It is not an interesting job, ________ the salary is very good.
A. although / but B. despite / and C. but / though D. yet / however
9. ________, he has continued to work on his thesis.
A. Although all these problems B. Even though there are problems
C. Despite of all these problems D. In spite of there are problems
10. In spite of ____________, he was determined to finish his work.
A. was seriously ill. B. be seriously ill
C. his serious illness D. he was seriously ill
11. _______ some German and British management styles are similar, there are many differences betweenthem.
A. In spite B. In spite of C. although D. Despite
12. I could not eat _______ I was very hungry.
A. even though B. in spite C. despite D. despite of
13. In spite _______, the baseball game was not cancelled.
A. the rain B. of the rain C. it was raining D. there was a rain
14. _______ he had enough money, he refused to buy a new car.
A. In spite B. In spite of C. Despite D. Although
15. _______, he walked to the station.
A. Despite being tired B. Although to be tired C. In spite being tired D. Despite tired
16. The children slept well despite _______.
A. it was noise B. the noise C. of the noise D. noisy
17. She left him _______ she still loved him.
A. even if B. even though C. in spite of D. despite
18. _______ her lack of hard work, she was promoted.
A. In spite B. Even though C. In spite of D. Despite of
19. _______ they are brothers, they do not look alike.
A. Although B. Even C. Despite D. In spite of
20. Our new neighbors are quite nice _______ they are sometimes talkative
A. despite B. in spite of C. though D. as though
A. Choose the best answer:
1. ________ having the best qualifications among all the applicants, Justin was not offered the job
.A. Although B. While C. In spite of D. Despite of
2. ________ the internet is very popular, many older people do not know how to use it
.A. However B. Nevertheless C. Even though D. Despite
3. _________ he wasn’t feeling very well, David was determined to take part in the inter-university athletics meet.
A. Although B. While C. Where as D. yet
4. __________ what Megan prepared for the job interview, she didn’t pass it.
A. Despite of B. In spite of C. Though D. However
5. Bruce was not praised_________ he was a hard worker
.A. despite B. in spite of C. although D. no matter how
6. It looks like they are going to succeed_________ their present difficulties.
A. despite B. although C. in spite D. even though
7. Mary usually goes to parties. She likes meeting people and crowded places ________she is rather shy.
A. In spite of B. Even though C. On the contrary D. In other words
8. Ann: Have you decided to get the job? Terry: Yes, I’ve just decided. I’ll accept that job_________ it is not suitable with my major. It is not an interesting job, ________ the salary is very good.
A. although / but B. despite / and C. but / though D. yet / however
9. ________, he has continued to work on his thesis.
A. Although all these problems B. Even though there are problems
C. Despite of all these problems D. In spite of there are problems
10. In spite of ____________, he was determined to finish his work.
A. was seriously ill. B. be seriously ill C. his serious illness D. he was seriously ill
11. _______ some German and British management styles are similar, there are many differences betweenthem.
A. In spite B. In spite of C. although D. Despite
12. I could not eat _______ I was very hungry.
A. even though B. in spite C. despite D. despite of
13. In spite _______, the baseball game was not cancelled.
A. the rain B. of the rain B. it was raining D. there was a rain
14. _______ he had enough money, he refused to buy a new car.
A. In spite B. In spite of C. Despite D. Although
15. _______, he walked to the station.
A. Despite being tired B. Although to be tired C. In spite being tired D. Despite tired
16. The children slept well despite _______.
A. it was noise B. the noise C. of the noise D. noisy
17. She left him _______ she still loved him.
A. even if B. even though C. in spite of D. despite
18. _______ her lack of hard work, she was promoted.
A. In spite B. Even though C. In spite of D. Despite of
19. _______ they are brothers, they do not look alike.
A. Although B. Even C. Despite D. In spite of
20. Our new neighbors are quite nice _______ they are sometimes talkative
A. despite B. in spite of C. though D. as though
A. PRONUNCIACION
Find the word which has different sound in the part underlined.
1. A. wanted B. naked C. finished D. needed
2. A. who B. when C. where D. what
3. A. thermal B. thankful C. there D. thorough
4. A. physical B. visual C. music D. because
5. A. invent B. debris C. helpless D. news
B. STRESS
Find the word which has different stress pattern from the others.
6. A. artistic B. historic C. dramatic D. scientific
7.A. medical B. hospital C. politic D. electric
C. LANGUAGE FOCUS
Choose A, B, C, D for each gap in the following sentences.
8. _____ workers were sent to the area immediately, but no villager was survived when the
landslide happened.
A. help B. rescue C. volunteer D. assistance
9. Three hundred people were left _____ by the earthquake.
A. home B. property C. homeless D. house
10. The train or Ha Noi ______ at 7a.m tomorrow.
A. leaves B. leaving C. to leave D. left
11. Environmental pollution has _____ to lots of health problems.
A. caused B. got C. made D. led
12. The heavy rain has caused _______ in many parts of the country.
A. drought B. floods C. forest fire D. storms
13.If we use water………, fewer people will have cleaner water.
A. care B. carefully C. careless D. carelessly
14. The city has a summer _____ in the park.
A. festively B. festive C. festively D. festival
15. She prefers English ……France
A. to B. for C. at D. in
16. By the time we _______ to the cinema, the film had started .
A. had got B. got C. were getting D. get
17.Many people die………..food poison today.
A. at B. of C. in D. on
18. A person who __________ the bagpipes is called a piper.
A. plays B. performs C. entertains D. does
19. Don’t drink that water. It’s __________.
A. damaged B. dumped C. contaminated D. clear
20. The road in front of my office is always __________ when it rains heavily.
A. to flood B. flooding C. flood D. flooded
21. Singapore is famous for its __________ and green trees.
A. cleanliness B. cleanly C. cleaning D. clean
22. All our English teachers are __________ speakers.
A. native B. original C. foreign D. official
D. WRITING
Choose the correct answers.
23. He broke my watch.
A. My watch were broken. B. My watch be broken.
C. My watch is broken. D. My watch was broken.
24. The teacher explained the rule to the student.
A. The rule was explained to the student.
B. The students were explained the rule.
C. The students were explained the rules.
D. A and B are correct
25. He often asks me to help him.
A. He is often asked to help them.
B. They are often asked to help me.
C. I am often asked to help him.
D. I am often asked him to help me.
26. His friends never forgave his betrayal.
A. His betrayal were never forgiven by his friends.
B. His betrayal was never forgiven by his friends.
C. His betrayal was never forgave by his friends.
D. His betrayal never forgave by his friends.
27. I am sure we’ll settle the matter easily.
A. I’m sure the matter will settle easily.
B. I’m sure the matter will be settled easily.
C. I’m sure the matter will settled easily.
D. I’m sure the matter won’t be settled easily.
28. They speak much about this book.
A. This book is much spoken about.
B. This book is much spoken.
C. This book is much about spoken.
D. This book are much spoken about.
29. Have they tested all the machines?
A. Have all the machines be tested?
B. Have all the machines been testing?
C. Have all the machines been tested?
D. Have all the machines been being testing?
30. Does he realize that they are laughing at him?
A. Is he realized that he is laughing at?
B. Is he realized that he is being laughed at?
C. Does he realize that he is laughing at?
D. Does he realize that he is being laughed at?
31. The manager offers me several jobs.
A. I was offers several jobs.
B. I am offered several jobs.
C. Several jobs are offered to me.
D. B and C are correct.
32. We found that they had cancelled the soccer match.
A. We found that the soccer match had been cancelled.
B. The soccer match had been cancelled.
C. The soccer match was found that had been cancelled.
D. The soccer match was found to have been cancelled by us.
33. Mary is cutting a cake with a sharp knife.
A. A cake is being cut with a sharp knife by Mary.
B. A sharp knife is cutting a cake and Mary.
C. Mary and a sharp knife are cutting a cake.
D. Mary is cutting a sharp knife by a cake.
34. “Did Shakespeare write this play?”
A. Did this play be written by Shakespeare?
B. Was this play written by Shakespeare?
C. This play was written by Shakespeare.
D. Did this play Shakespeare write?
35. Which book do the students love?
A. Which book are done love by the students?
B. Which book is the students loved?
C. Which book are loved by the students?
D. Which book is loved by the students?
E. READING
Read the passage and complete the sentences. Circle A, B, or D
THE GREAT HANSHIN EARTHQUAKE
The Great Hanshin earthquake, or the Kobe earthquake as it is more commonly known overseas, was an earthquake in
Japan that measured 7.3 on the Japan Meteorological Agency magnitude scale. It occurred on January 17th, 1995 at
5:46 a.m. in the southern part of Hyōgo Prefecture, and lasted for approximately 20 seconds. The epicenter of the
earthquake was on the northern end of Awaji Island near Kobe, a cosmopolitan city of over 1.5 million people. A total
of 6,434 people, mainly in the city of Kobe, lost their lives. Additionally, it caused approximately ten trillion yen in
damage. It was the worst earthquake in Japan since the Great Kantō earthquake in 1923, which claimed 140,000 lives.
36. The word ‘overseas’ in the text is closest in meaning to __________.
A.abroad B.at sea C.by sea D. foreign
37. The word ‘occurred’ in the text is closest in meaning to __________.
A.ended B.happened C.started began
38. It is stated in the passage that the number of deaths in the city of Kobe __________.
A. was greater than that of the Great Kantō earthquake
B. was not as high as in the Great Kantō earthquake
C. exceeded that of any known earthquake.
D. It wasn’t the worst earthquake in Japan ever.
39. The northern end of Awaji Island was the place where __________.
A. the effects of the earthquake were felt most strongly
B. there was no damage to people and property
C. 1.5 million people lost their lives.
D. no foreign people live.
40. We understand from the passage that the Kobe earthquake __________.
A. is internationally known as the Great Hanshin earthquake
B. didn’t cause any damage in the neighborhood of Kobe
C. is not the deadliest earthquake in the history of Japan
D. didn’t have any effects on Japan.
#Phạm Ngọc Thanh Trâm
23. She asked me_____. A. if I am thirsty B. if I were thirsty C. if was I thirsty D. if was thirsty 24. If Mary doesn’t improve in math, we_____have to find a tutor for her . A. will B. can C. should D. would 25. “Put your book away”, said the teacher. A. The teacher said us put our book away. B. The teacher told us to put our books away. C. The teacher said to us put our books away.D. The teacher told to us to put our books away.
26. “Don’t stay up too late, my son”, he said. A. He told his son not to stay up too late.B. He said to his son not stay up to late. C. He told to his son not to stay up too late. D. He said his son not to stay up too late.
27. He wants to know ________ . A. whether I would come back from school the next day. B. whether I would come back from school tomorrow. C. whether I will come back from school the next day. D. whether I will come back from school tomorrow.
28. The journey to the village is very __________ . A. interested B. interesting C. disinterested D. interest
29. It is an ________day to me at the seaside with my friends. A. enjoyable B. enjoyment C. enjoyably D. enjoy
30. After a long walking, they feel tired and _________. A. hunger B. hungryly C. hungrily D. hungry
31. He is too busy _________ care of her. A. taking B. to take C. took D. taken 32. She ________ a famous singer some years ago. A. is used to be B. is used to being C. used to be D. used to being
10 11. 33. A computer can gather a lot of _________ for many different _________ . A. informations / purpose B. informations / purposes C. information / purposes D. information / purpose
34. The interviewer asked her __________ her name ________ . A. what / was B. if / was C. what / is D. if / is
35. The excited children were looking forward ___________ with the foreign teacher. A. to speak B. spoken C. to speaking D. for speaking
36. He can't earn money_________he has no job. A. unless B. until C. without D. if 37. Let's play video games, _________ ? A. shan't we B. do we C. shall we D. don't we
38. Mr. Pike sold his house, _________he? A. didn't B. could C. did D. couldn't 39. I haven't seen him for 3 years. I_________him 3 years ago. A. saw B. see C. will see D. have seen
40. I ask him_________ A. what name is he B. what his name is C. what is he name D. what is his name
41. I don’t like using the internet because it has some _____ A. benefits B. advantages C. limitations D. disadvantages
42. The ______tell us what is happening in our city, in our country and in the world A. communicationB. advertisements C. media D. forecasts 43. You should watch the news every day. It’s very _____ A. informative B. time-consuming C. costly D. boring
44. No one can ____the advantages of using the computers. They help us do our work quickly and efficiently A. refuse B. deny C. agree D. accept
45. Email can be sent and received at any hour of the day,_____? A. can they B. can’t it C. can it D. can’t they 46. The Kien Thuc Ngay Nay is _____ read by both teenagers and adults A. wide B. widely C. widen D. widing 47. T.V viewer are able _____ questions about the show A. ask B. to ask C. asking D. asked
. Lan watched T.V lastnight , _____? A. doesn’t she B. did she C. didn’t she D. hasn’t she 49. Nobody does this , ________? A. do they B. does it C. doesn’t he D. don’t they 50. The Internet has _____developed and become a part of our life. A. increase B. increasing C. increasingly D. increased
23. She asked me_____.
A. if I am thirsty B. if I were thirsty C. if was I thirsty D. if was thirsty 24. If Mary doesn’t improve in math, we_____have to find a tutor for her .
A. will B. can C. should D. would
25. “Put your book away”, said the teacher.
A. The teacher said us put our book away.
B. The teacher told us to put our books away.
C. The teacher said to us put our books away.
D. The teacher told to us to put our books away.
26. “Don’t stay up too late, my son”, he said.
A. He told his son not to stay up too late.
B. He said to his son not stay up to late.
C. He told to his son not to stay up too late.
D. He said his son not to stay up too late.
27. He wants to know ________ .
A. whether I would come back from school the next day.
B. whether I would come back from school tomorrow.
C. whether I will come back from school the next day.
D. whether I will come back from school tomorrow.
28. The journey to the village is very __________ .
A. interested B. interesting C. disinterested D. interest
29. It is an ________day to me at the seaside with my friends.
A. enjoyable B. enjoyment C. enjoyably D. enjoy
30. After a long walking, they feel tired and _________.
A. hunger B. hungryly C. hungrily D. hungry
31. He is too busy _________ care of her.
A. taking B. to take C. took D. taken
32. She ________ a famous singer some years ago.
A. is used to be B. is used to being C. used to be D. used to being
33. A computer can gather a lot of _________ for many different _________ .
A. informations / purpose B. informations / purposes
C. information / purposes D. information / purpose
34. The interviewer asked her __________ her name ________ .
A. what / was B. if / was C. what / is D. if / is
35. The excited children were looking forward ___________ with the foreign teacher.
A. to speak B. spoken C. to speaking D. for speaking
36. He can't earn money_________he has no job.
A. unless B. until C. without D. if
37. Let's play video games, _________ ?
A. shan't we B. do we C. shall we D. don't we
38. Mr. Pike sold his house, _________he?
A. didn't B. could C. did D. couldn't
39. I haven't seen him for 3 years. I_________him 3 years ago.
A. saw B. see C. will see D. have seen
40. I ask him_________
A. what name is he B. what his name is
C. what is he name D. what is his name
41. I don’t like using the internet because it has some _____
A. benefits B. advantages C. limitations D. disadvantages
42. The ______tell us what is happening in our city, in our country and in the world
A. communicationB. advertisements C. media D. forecasts
43. You should watch the news every day. It’s very _____
A. informative B. time-consuming C. costly D. boring
44. No one can ____the advantages of using the computers. They help us do our work quickly and efficiently
A. refuse B. deny C. agree D. accept
45. Email can be sent and received at any hour of the day,_____?
A. can they B. can’t it C. can it D. can’t they
46. The Kien Thuc Ngay Nay is _____ read by both teenagers and adults
A. wide B. widely C. widen D. widing
47. T.V viewer are able _____ questions about the show
A. ask B. to ask C. asking D. asked
48. Lan watched T.V lastnight , _____?
A. doesn’t she B. did she C. didn’t she D. hasn’t she
49. Nobody does this , ________?
A. do they B. does it C. doesn’t he D. don’t they
50. The Internet has _____developed and become a part of our life.
A. increase B. increasing C. increasingly D. increased
1. What is a good description for this text?
A. An autobiography of Benjamin Franklin. B. The life of Benjamin Franklin
C. The works of Benjamin Franklin. D. Franklin and American Independence.
2. When was Benjamin Franklin born?
A. 1806 B. 1794 C. 1717 D. 1706
3. Which of these happened first?
A. Franklin trains as a printer. B. Franklin runs away to Philadelphia.
C. The American colonies rebel. D. Franklin starts his first publication.
4. What was Poor Richard’s Almanak about?
A. Franklin’s reputation. B. How to succeed in business.
C. How to do government printing. D. The text does not say.
5. In which countries did Franklin live?
A. England and France. B. Philadelphia and England.
C. London and America. D. England, America and France.
Mik làm ko biết đúng hay ko nữa, tại vì bài đọc nhìn choáng quá đi, nếu sai thì mong bn thông cảm.Thảo Phương
1. Bob is _______ of the twins.
A. big B. the bigger C. the biggest D. bigger
2. His brother is doing a science _______ at the University of Edinburgh.
A. degree
B. certificate
C. career
D. title
3. In front of the gate _______the guard.
A. did B. does C. did stand D. stood
4. You are late again, please try to be _______in future.
A. accurate
B. punctual
C. efficient
D. reliable
5. His change of job has _______him with a new change in life.
A. presented B. introduced C. led D. initiated
6. Her mother’s illness had placed him under a considerable _______.
A. worry B. tension C. stress D. strain
7. The scheme is too expensive to be _______.
A. compatible B. feasible C. liable D. accessible
8. Now that we’ve identified the problem, we must decide on an appropriate course of_______.
A. progress B. solution C. development D. action
9. It was a daring robbery, which took place in _______daylight.
A. broad B. total C. wide D. absolute
10. When I advised you to change jobs, I had your best_______at heart.
A. feelings B. thoughts C. interests D. aspects
II. Each numbered line in the following passage has ONE mistake. Find and correct it.
1
Most people agree that computers are the most important invention of the twenty=>twentieth
2
century. The first business computers was=>were introduced just about thirty years ago. And
3
now they are being used in a widely =>wide variety of fields, from banking to space travel.
4
However, until just a few years ago, computers were very large, expense=>expensive machines
5
owned by large corporations. Despite =>although everyone knew that computers existed, very
6
few people had ever seen one and even less =>fewer had used one. Then in the 1970s the
7
silicon chip was invented. Because this electronic device could store a large number=>amount of
8
information in a very small space, computers could be smaller and more=>less expensive than
9
the huge mainframe computers used by corporations. Some computers manufacturers
believed that people might like=>want to have computers in their homes, offices, and schools,
10
so the person =>personal computer was born.
1 B
2 D
3 D
4 B
5 D
6 D
7 B
8 D
9 A
10 A