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Write the second sentence so that it has the same meaning to the first one :
1. I think it would be a good idea to take the train.
=> I suggested ...........taking the train...........
2. She went out, nut she didn't say a word.
=> She went out without ......saying a word......
3. I often go to bed late.
=> I am used ......to going to bed late........
4. What about going to the cinema tonight ?
=> Shall we ........go to the cinema tonight........ ?
5. " Why don't you go with me ? ", he asked me.
=> He asked me why ......I didn't go with him........
6. She enjoys going swimming.
=> She is interested in .....going swimming..........
7. Does he spend most of his free time playing video games ?
=> Does it take .......he most of his free time to play video games....... ?
8. Does it take you 3 hours to do this task ?
=> Do you spend .......3 hours doing this task... ?
9. Lan didn't have breakfast, so she is very hungry now.
=> Because Lan ........didn't have breakfast, he is very hungry now........
10. Ho Chi Minh City is the largest city in Viet Nam.
=> No cities .......in Viet Nam are as large as Ho Chi Minh City.........

EXERCISES
Exercise 1 – Put the verbs in brackets in the correct verb tense form.
1. Please don’t make so much noise. I (study) ...am studying...
2. My father usually (have) ..has.... tea for breakfast.
3. What ....was.. you (do) ..doing.... at this time yesterday ?
4. I (watch) ..watched.... that film with my sister last week.
5. We (study) ..have studied.... almost every lesson in this book so far.
6. He (win) ..won.... the gold medal in 2009.
7. We (not see) ...haven't seen.. your father for ages.
8. He (type) ...had typed... ten letters by lunchtime yesterday.
9. All of you (take) .are going to take..... the graduation examination in two months’ time.
10. By the end of this year, I (work) ..have been working.... here for 18 years.
11. He (see) ....saw.. her while he (walk) ...walked... down the street.
12. I thought they (wait) ...... for us for half an hour.
13. After he (do) ..had done.... his homework, he went to the cinema.
14. We (not see) ..haven't seen.... her since she (leave) ..left.... school.
15. When I (be) .was..... a boy, I often (go) ...went... fishing with my teacher.
16. When I (leave) .left..... my office last night, it (still..
Exercise 2 – Rewrite each of the following sentences in such a way that it has a similar meaning to the original one.
1. I have never read this kind of book before.
- It is the first time ...I have read this kind of book...
2. I have never read such an interesting novel.
- This is the most .interesting novel I have ever read.....
3. She began to work as a secretary in 2005.
- She has ..worked as a secretary since 2005....
4. He hasn’t seen his sister since she left for Japan.
⇒ He last saw his sister when she left for Japan.

Complete the second sentence so that it has a similar meaning to the first one.
1.They suggested banning advertisements on TV.
- They suggested that advertisements on TV should be banned.
2. People say that they bought this shop last year.
- It is_____said that they bought this shop last year._______________________________________________
3. ''How much do you think it will cost?'' he said to me.
- He asked me ____how much i though i would cost________________________________________
4. Mr.Brown's team has lost the game. He looks very sad.
- Mr.Brown whose___team has lost the game, looks very sad.______________________________________
5. Do you know the man who sat next to me at Nam's birthday party last night?
- You know the man who sat next to me at Nam's birthday party last night don't you?_______________________________________________
6. It takes Minh 2 hours to do his homework every day.
- Minh spends 2 hours doing his homework every day.____________________________________________
7. We were late for school because of the heavy rain.
- Because it ______rained heavily We were late for school ________________________________________
8. My mother used to make us clean the house.
- We used____to be made to clean the house by my mother____________________________________________
9. ''I'm working in a restaurant, and don't care much for it. ''she said
- She said___she was working in a restaurant, and didn't care much for it_____________________________________________
10. It's two years since I last spoke to her.
- I haven't_____spoken to her for two years___________________________________________
11. Going swimming in the river in the summer is interesting.
- It_____is interesting to Go swimming in the river in the summer_____________________________________

Câu ước :
1/ The weather isn't nice today.
→ I wish ....the weather were nice today......................
2/ I have to do a lot of homework today
-> I wish ...i didn't have to do a lot of homework today.......................
3/ My father smokes very often.
→ I wish ...my father didn't smoke very often.....................
4/ We live in a small house.
→ We wish ..we didn't live in a small house........................
5/ I don't have a longer vacation.
-> I wish ...i had a longer vacation.........................
6/ They don't stay in Hue
-> They wish .....they stayed in Hue.....................
7/ There aren't any apples in the fridge.
-> I wish ......there were some apples in the fridge........................
8. He can't pass the examination.
-> He wishes.....he could pass the examination.....................
9. We can't go out because of heavy rain.
→ We wish.....we could go out ............................
10. What a pity! He can't come here.
-> I wish.....he could come here...........................
11. Lan is sorry that she can't go to the movie tonight.
-> Lan wishes.....she could go to the movie tonight..........................
12. I don' know how to use an lpad.
-> I wish...i knew how to use an lpad..............................
13. Doan is not tall enough to play basketball.
-> Doan wishes ...he were tall enough to play basketball......................
14. He doesn't help his mother with housework.
-> I wish...he helped his mother with housework..........................
15. I don't have enough money to help you.
-> I wish...i had enough money to help you........................
16. My brother is too short to play basketball.
-> I wish....my brother weren't short to play basketball. ......................
17. My grandmother doesn't stay with me.
-> I wish....my grandmother stayed with me.........................
18. He can't swim very well
-> He wishes.....he could swim very well....................
19. My brother doesn't have a good job.
-> My brother wishes....he had a good job............ .....
20. I don't know how to speak French.
-> I wish....i knew how to speak French.............. ....
Câu điều kiện :
1. Rewrite the following sentences in such a way that they don't change the meaning
1. He doesn't have the money and he can not afford a new car.
-> If......he had the money ,he could afford a new car....................
2. I cannot go to the beach with you because I have a date with my old classmate.
-> If.....i didn't have a date with my old classmate,i could go to the beach with you....................
3. I never get very lonely because I have lots of good friends.
-> If....i didn't have lots of good friends,i would get very lonely.....................
4. The match can be cancelled because it rains heavily.
-> If.....it didn't rain heavily,the match couldn't be cancelled....................
5. Because Simon doesn't live near his mother, he can't visit her often.
-> If.....Simon lived near his mother, he could visit her often.....................
6. I don't have free time, so I can't go to see him.
-> If....i had free time,i could go to see him.....................
7. I am poor, I can't travel around the world.
-> If...i weren't poor,i could travel around the world.......................
8. I am not a millionaire, I can't help all people.
-> If....i were a millionaire,i could help all people..............................
9. I am not old enough; I can't decide my own life.
-> If...i were old enough,i could decide my own life.
10. I am very tired so I can't finish my work.
-> If....i weren't very tired,i could finish my work...............................
2. Rewrite the sentences with If
1. Stop using dynamite for fishing and a lot of sea creatures will be well preserved.
-> If people Stop using dynamite for fishing , a lot of sea creatures will be well preserved................................
2 Use less paper and we can save trees in the forest.
-> If we...use less paper,we can save trees in the forest...............................
3. Plant more trees along the streets and we will have more shade and fresh air.
-> If we Plant more trees along the streets , we will have more shade and fresh air.
4. Work hard and we'll make this beach a clean and beautiful place again.
-> If we Work hard ,we'll make this beach a clean and beautiful place again
5. Keep our environment clean and we'll live a happier and healthier life.
-> If we Keep our environment clean ,we'll live a happier and healthier life.
6. Ba isn't rich so he can't travel around the world.
-> If Ba were rich,he could travel around the world
7. Mr. Loc doesn't have a car so he doesn't drive it to work.
-> If Mr. Loc had a car,he would drive it to work.
8. Nam doesn't arrive at school on time because he doesn't have an alarm clock.
->If Nam had an alarm clock,he would arrive at school on time
9. Tuan can't get better grades because he doesn't study harder.
-> If Tuan studied harder,he could get better grades
10. I don't meet an alien from outer space so I don't invite her to my home.
-> If I met an alien from outer space ,i would invite her to my home.
I. Complete each sentence with one suitable preposition or connective :
( by; from; in; on; and; if; but; to; from; or; for; since; of; into; because; althought; therefore; however; up; so ; and; at; with )
1. They got married......in......2004
2. They have been married.....since......2004
3., Lan woke up late,...so.......she didn't have time for breakfast.
4. My classmate usually goes out.........on.......Saturday
5.My sister often goes to school..........at......... 7 o'clock
6. I have learnt English....for...........5 years.
7. Mr. Parker is a farmer.....but.........Mrs. Parker is a worker.
8. The ruler is ...BETWEEN......the lamp and the book.
9. The boys help Mr. Packer on the farm.......ALTHOUGH..... he is busy.
10. They got up quite late.......SO...........they missed the trairn.
11. Lan won't go to school........BECAUSE...........she is sick today.
12. The competitions will take place....BETWEEN...........8am and 2p.m.
13. The boy is afraid........OF..........snakes
14. Nga is sick today.......SO.... she won't go to school.
15. They are interested........IN..........buying a new house.
16. Don't worry.....ABOUT.......... the money! I'll lend you.
17, Don't shout at the child.....ALTHOUGH.........he makes a mistake.
18. Ba and Tam usually go fishing.....AT......weekends
19. The bus parked at the parking lot...OF..... waited for people to come back.
20. They have learnt English.....FOR...........many years.
21. She is famous ........FOR...........her beautiful face and sweet voice.
22. Mr. Parker grows maize on his farm.....BUT....... .Mrs. Parker works at a grocery store.
23. Mr. Brown is often worried.....ABOUT........money
24. It was hot........SO.......... turned on the air condition.
25. I'm very proud......OF..........my school.
26. Our little brother took a long nap.......FROM.....2p.m to 6p.m.
27. I haven't seen Mai for a few days. I last saw her......BY.......
Tuesday.
28. The price of petrol will go up.........IN.......November.
29. I will call you........ON...........Wednesday evening.
30. They have lived here........SINCE........2009.
31. The meeting will be.....FROM.......nine to eleven......IN...........the morning.
33. He has learned French........FOR.........5 years.
34. We must be there........BETWEEN.............. 8 am and 9 am
35. He usually does exercises..........IN........the afternoon.
36. He tried hard ..........SO....... he got good grades.
37. She is under 16,......SO.......she is not allowed to ride a motorbike. People usually get together.......∅..........at Christmas.
38. I'll phone you.......ON.......Tuesday morning.........AT.........about 10 o'clock. Isn't it OK.
39. His father dierd........IN........ 2005.
40. They haven't meet each other.........FOR..........a long time.
41. Lan's birthday is......ON............June 18h
42. She passed the exam.....BECAUSE........she is always hard-working
44. Goodbye! See you........ON........Monday
45. She is a kind girl,......BUT........few people like her.
46. It's very nice.........OF........ you to help the old man.
47. She likes mangoes, durians.......and.......... bananas.
ON Sunday afternoons I usually go for a walk.
48...........on........... Sunday afternoon I usually go for a walk.
49. Mr. Brown enjoys walking around his garden.....at..........night.
50. I woke up.........at......... five o'clock......in.......the morning.

I, COMPLETE THE SECOND SO THAT IT HAS A SIMILAR MEANING TO THE FIRST ONE
1, Unless he takes these pills , he won't be better
If .....he doesn't take these pills, he won't be better.........................
2, Despite working har , he can't suppport his large family.
Although.....working hard, he can't support his large family............
II, COMPLETE EACH OF THE FOLLOWING SENENCES , USING THE WORDS GIVEN
1,If/ I / meet/ alien/ outer space/ I/ invite / home/ talk.
=> If I met an ailen from outer space, I would invite him to home to talk
2, I/ never/ travelled/by/ air.
=> I have never travelled by air
3, The students/ study / for exam/ now.
=> The students are studying for their exam now.
4, It/ be/ such/ cold day/ we/ decide/ not/ go out.
=> It's such a cold day that we decided not to go out
III, COMPLETE TE SECOND SENTENCE SO THAT IT HAS A SIMILAR MEANING TO THE FIRST ONE
1, Can you use this compute ?
- You can.........use this computer,can't you?...........
2, I can't remember the answers to these questions.
I wish....I remembered the answers to these questions
3, " I must go to Ha Noi tomorrow" said Nam
Nam said....he had to go to HN the following day
4, Nga spends 4 hours a day practicing English with her friends.
It takes..Nga 4 hours a day to practice English with her friends
5, We take our umbrellas because it israining haveily.
It is..rainning heavilly so we take our umbrellas
IV, COMPLETE EACH OF THE FOLLOWING SENTENCES , USING THE WORDS GIVEN
1, You/ mind/ if I / borrow/ car/ ?
=> would you mind if I borrowed your car?
2, Tom/ always/ going/ hoame/ late/ so/ mother/ be / angry
=> tom is always going home late so his mother is very angry
3, It/ be/ necessary/ you/ practice English/ every day/.
=> it is necessary for you to practice E every day
4, Compost/ can/ made/ household/ garden waste/.
=> compost can be made from household and garden waste
5, Flight 710/ Chicago/ take off/ ten / minutes/.
=> fight 710 to Chicago will take off in ten minutes

I, complete the second sentence so that is has the same meaning as the first sentence
1.we started learning english 3 years ago
.we have been learning english for 3 years
2. my father smoked cigarettes 5 years ago , but now he doen't smoke any more
my father used to smoke cigarettes 5 years ago
3. my mother tidies the iving room everyday
the living room is tidied every day by my mother
4. nga doesn't have many friends in HN
nga wishes she had many friends in HN
5. she isn't here
she wishes she were here.
6.Christopher discovered America in 1492
America was discovered in 1492 by Christopher
7. Workers repair the roof of my school
the roof of my school are repaired by the workers
I, complete the second sentence so that is has the same meaning as the first sentence
1.we started learning english 3 years ago
=> We have learnt English for 3 years.
2. my father smoked cigarettes 5 years ago , but now he doen't smoke any more
=> My father used to smoke cigarettes 5 years ago.
3. my mother tidies the iving room everyday
=> The living room is tidied everyday by my mother.
4. nga doesn't have many friends in HN
=> Nga wishes she had many friends in HN.
5. she isn't here
=> She wishes she were here.
6.Christopher discovered America in 1492
=> America is was discovered in 1492 by Christopher.
7. Workers repair the roof of my school
=> The roof of my school is repaired by workers.

I / Make meaningful sentences from the words or phrases given.
1. Ba / be / tired /now/ since/he /stay up late / watching TV /last night
-> __Ba is tired now since he stayed up late watching TV last night_________________________
2. I/ be / disappointed/ that /you/not do/ your homework/ last night
->___i was so disappointed that you didn't do your homework last night________________________
3. It / rain / yesterday / though/ the weather bureau/ predict / the weather / be fine
->___It rained yesterday though the weather bureau predicted that the weather was fine________________________
4. We/pleased/that/you/ work very hard /now
->___We are pleased that you are working very hard now ________________________
3. My friend/suggest/go /school by bus / save energy
->__My friend suggests going to school by bus to save energy_________________________
6. As/Nga/ feel/sick /now / she /want /go home.
->__As Nga feels sick now ,she wants to go home_________________________
7. Although /Liz/ have/an exam /tomorrow she / still watch/TV now
->___Although Liz has an exam tomorrow,she is still watching TV now________________________
8. It /rain/now/so/I can't go /the beach.
->__It is raining now so i can't go to the beach_________________________
9. It/be/ necessary /secondary school students/wear uniforms.
->__It is very necessary for secondary school students to wear uniforms. _________________________
10. Nga/break /the cup/yesterday/because /be careless.
->___Nga broke the cup yesterday because she was careless________________________
11. The new school/be /built /the town /next month
->___The new school will be built in the town next month________________________
12. The government /suggest/that/we /travel/bus /save energy.
->___The government suggests that we should travel by bus to save energy________________________
13. It/be/very kind/you /say so.
->__it is very kind of you to say so_________________________
14. Even though/it /rain heavily / they /go to school/ yesterday.
->__Even though it rains heavily,the still went to school yesterday_________________________
15. I/ suggest/ buy a present/ my mom / the 8 th March.
->__I suggest buying a present for my mom on the 8 th March._________________________
16. Lan/be sick /today /so/ cannot /go / the party.
->__Lan is sick today,so she can't go to the party_________________________
17. A new kind/cars/make / that factory/ last month.
->__A new kind of cars were made in that factory last month_________________________
18. The date of the meeting /just/ be / change /again.
->___The date of the meeting has just been changed again.________________________
19. Mr.Nam /get up / late/ this morning /so / miss / the first bus.
->___Mr.Nam got up late this morning so he m missed the first bus________________________
20. If/ he / want/ lose weight / must do / more exercise.
->__If he wants to lose his weight,he must do more exercise_________________________
II/ Make meaningful sentences from the words or phrases given.
1. If we/ work hard/ we/ make this beach a clean/ beautiful place again.
->__If we work hard,we will make this beach a clean and beautiful place again._________________________
2. If Mr. Loc had/ car/ he drive it/ work.
->__If Mr.Loc had a car,he would drive it to work_________________________
3. The buffalo/ be/ the animal/ which/ chosen to be logo of SEA Games 2003.
->___The buffalo is the animal which was chosen to be logo of SEA Games 2003.________________________
4. How/ do some reading/ every day?
->___How do you do some reading every day?________________________
5. I suggest/ help/ elderly people/ war invalids/ their chores.
->___i suggest helping elderly people in the war for their chores________________________
6. If we / use less paper/ wel/ save trees/ the forest
->.__If we use less paper well,we will save trees in the forest_________________________
7. Many tourists/ enjoy festivals/ Viet Nam though/ not understand/ Vietnamese culture very much.
->__Many tourists enjoy festivals in VN though they don't understand about Vietnamese culture very much._________________________
8. Though/ he/ miss/ the bus/ not get/ home late
->__Though he missed the bus,he didn't get home late_________________________
9. Hoa/ be/ amazed/ that/ get/ a letter from her best friend.
->___Hoa was amazed that she got a letter from her best friend________________________
10. The keyboard/ not/ working well/ Mary/ tried/ finish her letter.
->___The keyboard isn't working well ,but Mary tried to finish her letter.________________________
11. Nga/be/ they girl/ who/ win/ race last week.
->__Nga is the most beautiful girl who won the race last week _________________________
12. Easter/ be/ one/ the most popular festivals/ Europe.
->__Easter is one of the most popular festivals in Europe_________________________
13.The explorer / discover/ America/ be Christopher Columbus.
->__the explorer who discovered America was Christopher Columbus._________________________
14. I finished my homework,/ although/ I/ not/ feel well
->_______I finished my homework,although I didn't feel well____________________
15. We /visiting Ha Long Bay which /be/ in the north / Vietnam
->____ We are visiting Ha Long Bay which is in the north of Vietnam_______________________
16. Even though Bao was sick,/ help his mother/ the housework
->___Even though Bao was sick, he helped his mother with the housework________________________
17. The man/ speak to me / yesterday / be / very polite.
->___The man who spoke to me yesterday was very polite________________________
18 .Passover/ be/ one/ the most important celebrations/ Jewish people
->___Passover is one of the most important celebrations of Jewish people________________________
19. The bus which 1 take school every morning /be/ always crowded
->___The bus which 1 take school every morning is always crowded________________________
20. Tet/be/ a festival/ which/ occur/ in late January/early February
->___Tet is a festival which occurs in late January or early February________________________
21. I/amazed/I/ meet/ you here now.
->__i am amazed that i am meeting you here now_________________________
22. I/sorry/I/ break/ the vase yesterday
->__i was sorry that i broke the vase yesterday_________________________
23. Her parents/shocked/ she / failed/ the exam.
->__her parents were shocked because she failed the exam_________________________
24. His parents/ be happy/because/ he/get/ good job.
->___His parents were happy because he got a good job________________________
25. She /not read/books/because /not have/enough time.
->___She doesn't read books because she doesn't have enough time________________________
26. If/people/stop /use dynamite / fishing/sea creatures / be well persevered.
->___If people stop using dynamite for fishing, a lot of sea creatures will be well persevered________________________
27. Lan/ unhappy/ that/ can't go out/ tonight.
->__Lan is so unhappy that she can't go out tonight_________________________
28. Mary/ old/ enough/ drive a car.
->___mary is old enough to drive a car________________________
29. Because Nga/ sick yesterday/ go to school/ for/ English lessons.
->___because Nga was sick yesterday,she didn't go to school for E lessons________________________
30. The boy/ read a book over there/ be/my student.
->__The boy reading a book over there is my student_________________________
32. The students who/ live/ that dormitory/ from Australia.
->__The students who live in that dormitory come from Australia_________________________
3. Thuy can't go' cinema tonigho beceausel have to do her homework.
->___Thuy can't go to the cinema tonight because she has to do her homework________________________
34 Although/ Phong's house/ far/ school/ always go to school/ on time.
->____Although Phong's house is far from school,he always goes to school on time_______________________
35. Lan/ enjoy/ peaceful atmosphere/ while/ Maryam/ praying.
->____Lan enjoyed the peaceful atmosphere while Maryam was praying_______________________

PHRASES GIVEN:
1. What a pity! They aren't here with us now.
I wish.......... they were here with us now.
2. Mr Pike smoked a lot a year ago.
Mr Pike........ used to smoke a lot a year ago.
3. Please keep silent in the classroom.
I'd rather you........ you kept silent in the classroom.
4. I don't like you to come to class late.
I'd rather you......... you didn't come to class late.
5. I'm sory, I have no enough money to buy that car.
I wish.......... I had enough money to buy that car.
6. He often took me to the zoo when I was young.
He used........ to take me to the zoo when I was young.
7. They usually go to school by bus every day.
They are used....... to going to school by bus every day.
8. My sister is too short to play basketball.
My sister wishes....... she was tall enough to play basketball.
9. I'm sorry, i must go now.
I wish..... I didn't have to go now.
10. I'd like my father to give up drinking wine.
I wish..... my father gave up drinking wine.
11. He is too poor to build a small house.
He wishes .......... he was not too poor to built a small house.
12. My parent often go on a trip without me.
I wish.......... my parents didn't often go on a trip without me.
13. The house isn't near a supermarket.
I wish...... the house was near a supermarket.
14. I don't have enough time to help you.
I wish....... I had enough time to help you.
15. We can't pass the english ecamination.
We wish........ we could pass the English examination.
16. I'd like you to get up earlier every morning.
I wish...... you got up earlier every morning.
17. My brother often got up late last year.
My brother used...... to get up late last year.
18. We can't go out because of heavy rain.
We wish........ we could go out
19. She doesn't go to the movies because she has no free time.
She wishes........ she had free time to go to the movies.
20. What a pity! The streets are always busy.
I wish......... the streets weren't always busy.

Rewrite each of the following sentences beginning with the words given :
1. How long is it since you bought this car ?
=> When .....DID YOU BUY THIS CAR........................... ?
2. It's two years since I saw her.
=> I haven't ......SEEN HER FOR TWO YEARS..........
3. It's easy to learn English.
=> To learn ....E IS EASY...........
4. Lan likes listening to pop music.
=> Lan is interested ....IN LISTENING TO POP MUSIC...........
5. People have used the Internet all over the word.
=> The Internet has ....BEEN USED ALL OVER THE WORLD.................
6. "I'm having a wonderful time here" said Nga.
=> Nga said .....THAT SHE WAS HAVING A WONDERFUL TIME THERE................
7. My mother must / has to go to work on Sunday. I don't like this.
=> I wish .....MY MOTHER DIDN'T HAVE TO GO TO WORK ON SUNDAY...............
8. Linda's career as a television presenter began 4 years ago.
=> Linda has been .....A TELEVISION PRESENTER FOR 4 YEARS.......
9. It is ages since I last saw you.
=> I haven't ....SEEN YOU FOR AGES.........
10. We last saw him when we were students.
=>We haven't .....SEEN HIM SINCE WE WERE STUDENTS.......
11. She is the most beutiful girl I've ever met.
=> I've never ...MET SUCH A BEAUTIFUL GIRL BEFORE..............

V- Finish the second sentence so that it has the same meaning as the first one:
1- Lan’s brother gave her a story forher birthday.
=>Lan was given a story by her brother in her birthday.
2- It was such a bad news that Mai burst into tears.
=>The news was so bad that Mai burst into tears.
3- If Hong doesn’t study harder, she’ll fail the exam.
=>Unless Hong study harder, she'll fail the exam.
4- I’d like to visit England more than any other country in the world.
=>England is the country that I'd like to visit most.
5- The flight to Ho Chi Minh city lasted one hour and a half.
=>It took one hour and a half to fly to Ho Chi Minh city.
6- The organizers will exhibit the paintings till the end of the month.
=>The paintings will be exhibited till the end of the month.
7- She last wore that dress at her sister’s wedding.
=>She hasn’t worn that dress since her sister’s wedding.
8- Computers are used to design new models.
=>People use computers to design new models.
9- When did you start working in that factory ?
=>How long have you worked in that factory?
10-It isn’t necessary for students to wear uniforms today.
=>Students don't need to wear iniforms today.