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1. The identity of Jack the Ripper, a murder responsible for a number of horrendous killings in the nineteenth century, never(establish).........................

2. Foreign curency can(convert)................into sterling at a number of points in the city, but the best rate and lowest commission charges(provide)................at banks.

3. Don't forget to bring my dictionary when you (come)............back tomorrow.

Chỉ có 3 câu ấy thôi, bn nào làm dc thì giúp mik với nha!!!

1.Three pumpkins are weighed in pairs in all possible ways. The weights of all these pairs are 8kg, 9kg and 11kg. How much does the lightest pumpkin weight? 

2.It takes Jack 42 minutes to cut a long log of wood into seven pieces. How long will it take him to cut that log of wood into nine pieces?

3.The sum of two fractions 1/2 and 1/3 is a fraction with denominator of 12. Find its numerator

4.The floor of a rectangular room is covered with square tiles. The room is 24 tiles long and 16 tiles wide. The number of tiles in the outer border of the floor is ?

5.The average of 4, 8, X and 13 is 8. The value of X is ?

6.How many zero digits are there in ten million?

7.Fill the missing number in the blank
44444 = 40000 +400+ ............ + 4

8.There are 3 children in a family,Jack,Mary and Peter.Mary can clean the house for 1 hour.Jack can do thesame job for 2 hours and Peter needs 6 hours.If theydo the job together then they need ........... minutes.

9.MNPQ is a square that is made up of two identical rectangles and two squares of area 9 and 16CM² . The area of the square MNPQ is ? CM2

TO SE TICK CHO AI NHANH VA DUNG 

1. I don't know why this class is always so dirty. It (clean) every morning.

2. The murder suspect told the police a complicated alibi but it (believe) by them and he was charged with the murder.

3. "Whose is that computer in the corner of the office?" "I don't know - it (never use) by anyone."

4. When foreign films are dubbed into English, usually a lot of the original meaning (lose) in the translation.

5. Humans (think) to have originated in the east of Africa.

6. If my car (damage) by you, you will pay for the repairs.

7. Glenn Miller (kill) in an aircrash in England in the 1940s.

8. When I am older, I (know) as a famous scientist.

9. The films of Charlie Chaplin (love) all over the world.

10. The new factory will open next July and the company says that over 250 employees (need) initially.

11. Did you hear that Jane (promote) to a management position at work! What great news.

12. (pay) for a job you enjoy doing must be the definition of a happy life!

Exercise 2: Fill in each blank in the passage with the correct word from the box. There are some extra words.(level-needs-cooperation-qualifications-degree-semester-institutions-benefit).
The Vietnamese-German University (VGU) is a Vietnamese state university. Founded in 2008, VGU is based on a close (1)…… between Viet Nam and Germany.Being a joint effort of Vietnamese and German (2)…… the university follows the successful German model and standards.VGU's strategy is to import excellent German study programmes, taken from the strongest engineering areas of Germany and customize them to the (3)…… of Vietnamese higher education. After a successful study, students receive a German university (4)…………… providing them with best opportunities on the job market.Studying at VGU is a gateway to Germany. VGU offers the opportunity to study at" German universities for one (5)……or to continute with postgraduate programmes.
Exercise 3: Complete the following sentences with the present perfect or present perfect continuous.
1. So far the college authorities (try)…..to make application process as simple and fast as possible for intemational students.
2. The university (establish)…..an international faculty that is responsible for the partnership with overseas institutions since 2005.
3. Since 2000, the Ministry of Education and Training (attempt)….to prevent classroom overerowding with a plan to establish a further number of over 40 universities in Viet Nam.
4. Scientists (put)…a lot of effort into the area of since the economic reform in 1985.
5. The international A-levels (be)…..considered by many experts in the field of education to be the "gold standard" of examinations for a very long time until now.

VII. There is one mistake in each sentence. Find and correct it.
1. The burning of fossil fuels is harmful for the environment and public health.
2. Solar energy can convert into other forms of energy, such as heat and electricity.
3. Solar power is by far the more popular renewable energy source.
4. Within ten years, people will be used less fossil fuel and more renewable energy.
5. Using solar energy instead fossil fuels can help reverse the effects of global warming.
6. Many people living in rural areas use biogas to cook, and heating.
7. Wind power is clean, abundant, widely available, and environmental friendly.
8. One of the ways you can save energy in your home are to use energy saving light bulbs.

giải thích với aaa

Question 1:
The value of expression:  is ..................

Question 2

Which of following numbers is smaller than 55606149 and larger than 55604896?

Question 3

Anna bought 40 jellybeans. Which statement is incorrect?

Question 4

Bob chose a natural number and multiplied it by four. Which of following numbers could not be his answer?

Question 5

Suppose all counting numbers are arranged in columns as shown at the right. Under what letter will the number 2016 appear?

Question 6

Given five numbers, the average of two numbers is 17 and the average of the other three numbers is 12. The average of all these number is.............

Question 7

In the following expression: 20 - 16 + 7 : 36 x 12, if "+" means "x"; "-" means "+"; ":" means "-" and "x" means ":" the its value is ..........

Question 8

Donald Trump has 19 grandchildrens, all of different ages. Anna is the eldest. The sum of ages of all grandchildren is 190. At least how old is Anna?

a. 24

Question 9

A square floor is tiled with congruent square tiles. The tiles on the two diagonals of the floor are black. The rest of the tiles are white. If there are 201 black tiles then the total number of white tiles is ............

Question 10

Fill the missing number in the blank.
44444 = 40000 + 400 + ............. + 4

Question 1

The average of 4, 8,  and 13 is 8. The value of  is .............

Question 2

How many zero digits are there in ten million? 
Answer: ...............

Question 3

The sum of two fractions  and  is a fraction with denominator of 12. Find its numerator.
Answer: ...................

Question 4

Three pumpkins are weighed in pairs in all possible ways. The weights of all these pairs are 8kg, 9kg and 11kg. How much does the lightest pumpkin weight? 
Answer: .............. kg.

Question 5

It takes Jack 42 minutes to cut a long log of wood into seven pieces. How long will it take him to cut that log of wood into nine pieces?
Answer: .................. minutes.

Question 6

The floor of a rectangular room is covered with square tiles. The room is 24 tiles long and 16 tiles wide. The number of tiles in the outer border of the floor is ...............

Question 7

There are 3 children in a family, Jack, Mary and Peter. Mary can clean the house for 1 hour. Jack can do the same job for 2 hours and Peter needs 6 hours.
If they do the job together then they need ........ minutes.

Question 8

MNPQ is a square that is made up of two identical rectangles and two squares of area 9cm² and 16cm². The area of the square MNPQ is ............ cm².

Question 9

The four - digit number 5BB1 is divide by 9.
The value of B is ..........

Question 10

Which of the following diagrams is different from the others?

Question 1

In a restaurant, there are 17 tables, each with 3, 4 or 6 chairs. The tables with 3 or 4 chairs can accommodate 44 people. The restaurant can accommodate 74 people. How many tables are there with 3 chairs?
Answer: ........ tables.

Question 2

Bella thinks of two consecutive numbers in the range 1 to 6. She tells Alice one of the numbers and Jack the other. Alice and Jack have the following conversation:
Jack: I don't know your number.
Alice: I don't know your number, too.
Jack: Now I know! 
The pair of numbers which Bella think of could be ..............

Choose the word or phrase that best completes each sentence below.

 6. Sudden changes in water temperature can ________ mass killings of fish, plants, or amphibians. A. come up B. cause C. dump into D. thank to 

7. Water pollution________ the death of all forms of life in the water bodies. A. occurs B. results of C. creates D. leads to

 8. ________can cause high blood pressure, heart problems, sleep disturbances, and hearing problems. A. Air pollution B. Light pollution C. Water pollution D. Noise pollution 

9. ________are Chemicals that are used to kill unwanted plants, such as weeds. A. Fertilizers B. Pesticides C. Herbicides D. Pollutants 

10. Emissions of pollutants into the air can________ changes to the climate. A. get on B. end up C. go into D. result in 

11. ________can we help save our environment? A. What B. How C. Why D. How much 

12. As an________ why do you oppose banning plastic bags? A. environmental B. environmentalist C. environment D. environmenting 

13. The water supply is being tested for ________. A. contaminated B. contaminants C. contamination D. contaminate 

14. Wastewater________ is a process used to remove contaminants from sewage. A. treat B. treated C. untreated D. treament 

15 She became deaf after long-term________ to noise in the workplace. A. exposure B. exposed C. exposing D. expose 

16. If thermal pollution continues for a long time, it can________ cause huge bacteria. A. possible B. possibly C. impossible D. impossibly

 Choose the word or phrase that is CLOSEST in meaning to the underlined part in each of the following sentences. 

17. Polluted water causes the death of the fish. A. results in B. stops C. damage D. produce 

18. The soil becomes contaminated because of the use of so many pesticides and fertilizers. A. damaged B. untreated C. erosive D. polluted

Find one mistake in each of the following sentences and correct it.