-x^2+4x-5>0 . Chứng minh

Giúp mình làm bài 11,12 với ạ

XI. Choose the sentences (A, B, C or D) that is closest in meaning to the root sentence or best combines the two given sentences. 

5. She often went to school by bike but now she doesn’t any more. (used to) A. She is used to going to school by bike but now she doesn’t any more. 

B. She is used to go to school by bike but now she doesn’t any more. 

C. She used to going to school by bike but now she doesn’t any more. 

D. She used to go to school by bike but now she doesn’t any more. 

6. Minh is young. He can’t drive a car (enough) 

A. Minh isn’t old enough to drive a car. 

B. Minh is old enough to drive a car. 

C. Minh isn’t young enough to drive a car. 

D. Minh is young enough to drive a car. 

7. Nam is not old enough to be in my class. (too…to…)

A. Nam is too old to be in my class. 

B. Nam isn’t too old to be in my class. 

C. Nam is too young to be in my class. 

D. Nam isn’t too young to be in my class. 

8. I’m obliged to finish the letter before midday. (have)

A. I don’t have to finish the letter before midday. 

B. I don’t have to finish the letter after midday. 

C. I have to finish the letter before midday. 

D. I have to finish the letter after midday. 

9. You are not allowed to leave the room without permission. (mustn’t) 

A. You must leave the room without permission.  

B. You mustn't leave the room without permission. 

C. You must leaving the room without permission. 

D. You mustn't leaving the room without permission. 

10. It’s a good idea to swallow rapidly if you have hiccups. (should)    

A. You should to swallow rapidly if you have hiccups. 

B. You shouldn’t to swallow rapidly if you have hiccups. 

C. You should swallow rapidly if you have hiccups. 

D. You shouldn’t swallow rapidly if you have hiccups 

11. She is interested in listening to music in her free time. (fancy) A. She is fancied in listening to music in her free time. 

B. She isn’t  fancied in listening to music in her free time. 

C. She fancies listening to music in her free time. 

D. She doesn’t fancy listening to music in her free time. 

12. Why do people release flying lights and floating lights in this festival? (What) 

A. What is the reason of  people release flying lights and floating lights in this festival? 

B. What is the reason of  to release flying lights and floating lights in this festival? 

C. What is the reason of  releasing  flying lights and floating lights in this festival? 

D. What is the reason of do people release flying lights and floating lights in this festival?

XI. Choose the sentences (A, B, C or D) that is closest in meaning to the root sentence or best combines the two given sentences. 

1. Lang Lieu couldn’t buy any special food. He was very poor. (BECAUSE) 

A. Because Lang Lieu couldn’t buy any special food, he was very poor. 

B. Because Lang Lieu was very poor, he couldn’t buy any special food. 

C. Because Lang Lieu was very poor so he couldn’t buy any special food. 

D. Because Lang Lieu couldn’t buy any special food so he was very poor. 

2. During Tet, Vietnamese people buy all kinds of sweets. They make Chung cakes as well. (SO) 

A. During Tet, Vietnamese people make Chung cakes as well, so they buy all kinds of sweets. 

B. During Tet, because Vietnamese people Chung cakes as well, so they buy all kinds of sweets.

C. During Tet, Vietnamese people buy all kinds of sweets, so they make Chung cakes as well. 

D. During Tet, because Vietnamese people buy all kinds of sweets, so they make Chung cakes as well. 

3. The Hung King Temple Festival was a local festival. It has become a public holiday in Viet 

Nam since 2007. (HOWEVER) 

A. The Hung King Temple Festival was a local festival. However, it has become a public holiday in Viet Nam since 2007. 

B. The Hung King Temple Festival was a local festival. However having become a public holiday in Viet Nam since 2007. 

C. The Hung King Temple Festival has become a public holiday in Viet Nam since 2007. However, it was a local festival. 

D. The Hung King Temple Festival has become a public holiday in Viet Nam since 2007. However being a local festival. 

4. At the Mid-Autumn Festival, kids can sing, dance, and enjoy moon-cakes. Every child like it very much. (THEREFORE) 

A. At the Mid-Autumn Festival, kids can sing, dance, and enjoy moon-cakes, therefore every child like it very much. 

B. At the Mid-Autumn Festival, kids can sing, dance, and enjoy moon-cakes. Therefore, every child like it very much. 

C. Every child like the Mid-Autumn Festival very much, therefore kids can sing, dance, and enjoy moon-cakes. 

D. Every child like the Mid-Autumn Festival very much. Therefore, kids can sing, dance, and enjoy moon-cakes. 

XII. Rewrite these sentences using the words given.

1. The Bronze Pagoda is a must to see at the Yen Tu Festival, but visitors have to walk for about 6 hours to reach it. (nevertheless)

__________________________________________________________________

2. Because Nam and Tom arrived late, they missed the most important part of the festival. (therefore)

__________________________________________________________________

3. Mr. Lam was very busy; however, he spent the whole day at the Le Mat Village Festival. (although)

__________________________________________________________________

4. As Julia likes Vietnamese folk songs, she goes to the Lim Festival every year.(so)

__________________________________________________________________

5. She lost her job because she was inexperienced. (because of)

__________________________________________________________________

V. Mark the A, B, C, D on your answer sheet to indicate the best word/phrase that is OPPOSITE in meaning to the underlined part in each of the following questions.             

1. She had a cozy little apartment in Boston.  

A. uncomfortable         B. warm                           C. lazy                              D. dirty 

2. We'd better speed up if we want to get there in time. 

A. slow down               B. turn down                   C. put down                    D. lie down 

3. He decided not to buy the fake watch and wait until he had more money. 

A. authentic                  B. forger                         C. faulty                          D. original 

4. Certain courses are compulsory; others are optional.

A. required                   B. free                             C. pressure                      D. voluntary 

5.BYou should not give your personal information such as your full name or your hometown. 

A. private                      B. public                          C. individual                    D. confidential 

6. I adore helping my parents with the housework. 

A. mind                          B. hate                              C. like                               D. love 

7. My mother asks me to stop reading comics. 

A. continue                    B. omit                            C. avoid                            D. try 

1: You should ____________  information about a custom or tradition. 

A. finds                          B. found                           C. finding                         D. find 

2: A custom is something that has become an ____________ way of doing things. 

A. to be accept             B. to accept                     C. accepting                     D. accepted 

3: In the UK, there are lots of customs for table manners. For example, We ____________ use a knife and fork at dinner. 

A. have to                     B. are having                   C. has to                          D. having to 

4: In Viet Nam, you_______  use only the first name to  address people older than you. 

A. should                      B. must                           C. shouldn’t                    D. have to  

5: At the Mid-Autumn Festival ,kids can sing, dance, and enjoy moon-cakes ; ____________, every child likes it very much. 

A. However                  B. Moreover                   C. Because                      D. Therefore 

6: In 2010, Ha Noi____________  its 1000^th anniversary. 

A. celebrated                B. commemorated          C. worshipped                 D. remembered 

7: Tet is an occasion for family____________ in Viet Nam. 

A. visitings                   B. Meeting                    C. reunions                      D. seeings 

8: _______ spring comes, many Vietnamese villages prepare for a new festival season. 

A. While                       B. When                         C. Nevertheless               D. However 

9.Viet 9: Nam is __________ Multicultural country with 54 ethnic groups. 

A. a                                 B. an                                 C. the                                D. A and C 

10: Phuc decided to eat as a vegetarian__________he is not a Buddhist. 

A. because                    B. although                      C. moreover                     D. otherwise 

11: In Vietnam, Tet is an occasion for family___________ 

A.  gathering                 B. meetings                      C. reunions                       D. A and C 

12: The Xoe dance has more than 30 forms _________ on the first six ancient forms. 

A. depended                 B. laid                               C. based                           D. created 

13: We help load the rice _________ carts on the first day of our trip to the countryside 

A. in                               B. onto                             C.  by                                D. at 

14: The children used to ___________ a long way to school. 

A. going                         B. goes                             C. go                                 D. gone 

15: This room is__________________decorated but it is very nice and cozy. 

A. simple                       B. simply                         C.  complicated               D.  badly 

16: The nomads move two or three times a year to look for new ______ for their cattle. 

A. pasture                      B.  land                             C.  houses                         D.  products 

17: I don’t feel like ………. shopping now. I need to have some sleep to feel better.  

A. going                         B. to go                            C. go                                 D. to going 

18:  Kids really adore the Mid-Autumn Festival ………. they can sing, dance and enjoy moon cakes. 

A. therefore                   B. because of                  C. because                       D. so

19: Mai has found the  ………. . kit in the storage.

A. CD                             B. book                            C. origami                        D. craft

20. You ………… turn off your mobile phone on the plane.

A. must                          B. mustn’t                       C. should                          D. shouldn’t

21:  I am very interested in sarong – a traditional………. of Khmer people. 

 A.  custom                    B. clothing                       C. clothes                         D.  costume 

22:  The woman was walking on the street when she ………. an accident. 

 A.  saw                          B. was seeing                  C. sees                              D. had seen 

Ex2: Put the verbs in the brackets in the correct form of tense.

16.    His new novel (publish) ………………..………….……………in two months.

17.    Nam doesn’t his motorbike today. It (repair) ………………………………………..right now.

18.    A new supermarket (build)…………………………….…..…… in the neighborhood recently.

19.    . If we recycle more, we (help) .. ………………………… the earth.

20.    Factories (not dump)… ………………. waste into the rivers if the government fines them heavy.

21.    If people travel to work by bus, there (be) ………………….…….. fewer cars fumes.

22.    We will save thousands of trees if we (not waste)……………………….. paper.

23.    If we use waste water carefully, more people (have)…………...…… fresh water.

24.    If you (be)……………..…. the president, what ………………..you (do)……………….?

25.    They get sick so often. If they (exercise)…………… more, they (be)……….. healthier.

26.    If I (have)……………… one million US dollars, I (build)…………….. more parks in our city.

27.    Ngoc’s mother is unhappy. If Ngoc (tidy)…………..……….. her room every day, her mother (not be)……………………… so upset.

28.    There isn’t a garden at our house. If there (be……….., we (grow)……………….…..vegetables.

29.    It (not be)……………. possible to save the Earth if we (not take)…………action now

30.    If the world temperatures (continue) ………………….to rise, there (be)……….less snow.

31.    If I (be)……………. you, I (wear)…………………….earplugs when going to the concert.

32.    If we (do)…………………………..…. nothing to stop global warming, we (see)………………. big changes in the future.

33.    How………… you (travel) ………..…to work if you (not have)…………….. this motorbike?

34.    Our garden is so beautiful . There (not be)…………………….any flowers if my sister (not take care)………………………… of it every day.

35.    If today (be) __________ Sunday, we (go) _____________ to your native village.

36.    If she does not invite me to her birthday party, I (not go) _______________.

37.    What __________you (do) __________ if you (be) ________________him?

38.    If we send an invitation, our friends (come) _____________________to our party.

39.    If you (press) __________________CTRL + S, you will save the file. 

40.     She will forget to pick you up if you (not phone) ____________________her.

41.     If she had 5 pounds more, she (buy) ____________________ this T-shirt.

42.    We would sell the bike for 20 Euros if Ron (repair) _________________ it.

Ex2: Put the verbs in the brackets in the correct form of tense.

1.    My uncle (just open) ……………………………a new internet shop on Trang Tien street.

2.    ………….Linh (watch) ……………..……….TV at 9 o’clock last night?

3.    While Mr Brown (work)………..…….….. in the garden, his wife (cook) …………………

4.    Nam (not buy)………..… a new computer since he (sell)……………. the old one last month.

5.    ………Mr Phong (go) ………….to New York for ten days last year?

6.    Last year we (install) …………ordinary light bulbs, but now we (use)…………… new ones.

7.    When I (arrive)……….... at her house yesterday, she (do) ………………..her homework.

8.    He (be) ………………..….very successful in his business since he (come) ……..……..here .

9.    That exercise can’t (do) ……………………………………by all the students.

10.    His car (repair) ………………………………………… at this time yesterday.  

11.    This room (clean)……………………………………… by my sister every day.

12.    ………….…..these toys (make)………………………………… in China?

13.    These story books (write) ……………………….….……… by To Hoai in 1956.

14.    Nam (award)………………………… a gold medal in the chess tournament last week.

15.    Nothing (do)…………………………..…….. since Peter bought a computer last week.