Large cities often have problems that small towns and rural areas do not have. Two of the biggest problems are heavy traffic and the pollution that cars create. Of course. Traffic problems and pollution are not only found in big cities. However, the higher populations and larger number of cars on the roads in cities can make the problems happen more often and with more noticeable effects.

One of the most common traffic problems the large cities have is congestion. As the population of a city increases, so does the number of cars on the road. Cities cannot always improve the number

and size of their roads and highways to keep up with the number of cars. The result is traffic congestion, or trafficjams.

When traffic jams happen, cars that are stuck in the congestion continue to run their engines. This creates pollution and is a big problems. Pollution causes health problems for the people in citiesand also hurts the environment.

c. Careless drivers​d. Less traffic signs on the streets

c. environmental pollution​d. the population

a. full​b. aware​c. incapable​d. uncertain

Carbon footprints
Well , the answer is you can (6) ................ it . People contribule to balancing the nagative effects of their actions by using (7)............. fuels , recycling , reforestation and a number of other activities which are said to contribute to a ( 8 ) .............. of the carbon dioxide .
6. a. replace b. reuse c. increase d. batlance
7. a. fossil b. leaded c. smoky d. green
8. a.moving b. lowering c. rising d.falling
giải hộ mình 4h chiều đi học rồi

điền từ vào ... 

Could you send this leter ... me

I ..... just finished reading ( War and peace)

An increasing number of people are now going ... holiday to Egypt

They built these buildings 200 years ago. They are .... 

VTV1 is a national ... in Vietnam

The market is far... me.It is a long walk from my house

Quang is interrested .,... programs on National Georaphic Channel

How .... is  this documentary

I need a ... control so that I can turn on the TV

Are there any programmes ... teenagers on TV tonight

1 . look ! someone is climbing up that tree over there .............................................

2. can you hear those people ? what do they talk about ? ...........................................

3. are you believing in god ? ....................................

4. look ! that man tries to open the door of the car ......................................

5. the moon goes round the earth .............................................

6. i'm thinking it would be a good idea to leave early ......................................

7. the government is worrried because the number of people without jobs is increasing ............................................

8. i'm usually going to work by car .........................................

The amount of vehicles on the street (1) ……. every day. Traffic congestion is a problem in every major city in the world. Soon traditional means of daily transportation such as cars and motorbikes, etc. won’t be able to (2) ……. the world population. (3) ……. there is no space left on the ground, flying car might be the transportation of the future. Imagine your car can lift up into the air and fly (4) ……. congested road and reach your destination without (5) ……. about traffic jam. Engineers in Silicon Valley, home of many famous technology companies, believe the first flying car can become a reality in the next decade. The technology is already available; the problem is how to produce a flying car that is suitable for daily commercial use.

III.WORD FORMS: When swimming, we should listen to the pool lifeguards _______ (careful) Nowadays, there are many ______ sport activities after school (differ) The number of _____ in this game is increasing every week (participate) There are no _______ between my answer and his (differ) We encourage students to ________ in the English speaking contest (participant) You must be (care)______ when you cross the street. 1. If the sea level rises, some countries will ____________ (appear) 2. I really feel ___________ __ when I have a high temperature (health) 3. I have an _____________ with my dentist at 8 o’clock. (appoint) 4. When swimming, we should listen to the pool lifeguards ______________ _____ (careful) IV. TRANSFORMATION: 1.She likes going shopping better than watching TV. She prefers ......................................................................... 2.She likes staying at home more than going out. She prefers .........................................................................  3.They prefer going shopping to playing volleyball. They like..................................................................................................................... 4.We prefer walking to driving. We like..................................................................................................................... 5. He prefers golf to tennis.  He likes ............................................................................. 6. My father is a careful driver. My father............................... 7. My brother plays soccer very well. My brother is.................... 8. Children should spend a little time on playing video games. Children shouldn’t ...................... 9. Lan is interested in watching TV and her sisters are, too. => Lan ______________________________________________________- 10. We prefer paying by credit card to paying in cash. =>We like
 __________________________________________________. 11. It took me twenty minutes to travel to the gas station. I spent ............................... 12. My sister plays badminton well. My sister is a.................................. 13. We can ride a horse. They can ride a horse. =>We__________________________________________________________. 14. Deep fried food is not good. Junk food is not good =>Deep fried_______________________ 15.My sister is a very good student. →My sister ………………………………………………………………………………… He swims very skillfully. →He is…………………………………………………. His cousin runs very fast. →His cousin is……………………………………………. Mr. Pike plays tennis very well. →Mr.Pike is…………………………………… These boys dance very beautifully. →These boys are……………………………… You shouldn’t stay up late, it’s not good for your health. →You ought……………………………………… You should do exercise regularly. →Youought…………………………

Along with jogging and swimming, (1) ____________ is one of the best all-round forms of exercise. It can help to increase your strength and (2)____________, giving you more efficient (3) ____________ and a stronger heart. However, increasing your strength is not the only (4) ____________ of cycling. Because you are not carrying the (5) ____________ of your body on your feet, it is a good form of exercise for people with (6) ____________ feet or backs. However, with all forms of (7) ____________, it is important to start slowly and (8) ____________ up gently. Doing too much to quickly can (9)____________ muscles that are not used to working. I deally, you should be cycling at least two or three (10) ____________ a week.

II. Choose the odd one out.

III. Choose the word whose underlined part is pronounced differently.

IV. Choose the correct answers to complete the follow

IX. Read the passage and then decide if the following statements are True or False or Not Given.

It took hundreds of thousands of years for the world population to grow to 1 billion. However, in just another two centuries, it grew sevenfold. You know, in 2011, the total populaion of the world reached 7 billion. And today, it' s about 7.5 billion. Tokyo, with 37.8 million residents, continues to be the largest city in the world in terms of population.

Advances in modern medicine are the main cause of this dramatic growth in the world population. It helps the birth rates increase and the death rates decline. The second contributor is the improvrment in living standards. This leads to the rise of global lifespan, from 64.8 years in the early 1990s to 70.0 years today. Last but not least, the number of women of reproductive age is increasing day by day.

However, the rapid population growth can lead to the shortage in medical and educational facilities and services. The population grows fast so the demand for energy also increases. Therefore, energy shortages are also a big problem. In addition, air, water and land pollution caused by growing population in big cities has bad effects on people' s health.

1. The population of the world increased seven times just in two centuries.

A. True B. False C. Not Given

2. the birth rates are higher than the death rates.

A. True B. False C. Not Given

3. The global population today is 37 million.

A. True B. False C. Not Given

4. When the population grows rapidly, the poor have more problems than the rich.

A. True B. False C. Not Given