Gợi ý:

1. flying kites: I think it’s interesting. I wish I could try once.

2. keep a diary: I don’t like writing diary because it can be easily read and someone can find out your secrets.

3. read books: I really like reading books. It’s good that children spend more time reading than watching television or using computer.

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I think playing sports is the best leisure activity for teenagers. Firstly, playing sports can give you a healthy life and a fit body. Furthermore, there are some sports which you can play easily such as table tennis, tennis or football and after that, you feel completely relaxed or even free from your stress. Morever, you can make more friends by encouraging children to play sports. Sports also teach them how to communicate with their teammates, and show them how active and creative they are.

FUCK

I believe the best leisure activity for teenagers is any group activity. This could be playing a team sport or joining a hobby group or even volunteering. Firstly, teenagers like to feel that thev belong to the group. Secondly, being part of a group helps teenagers make friends. Friendship is very important to teenagers. In addition, they will make friends with people who have the same interests as them. For these reasons, I think group activities are best for teenagers.

Road transportation is the dominant mode of transport for distances up to 500 miles. InEurope, some three quarters of freight is transported over roads. In the U.S. it is about two third similar to India. As this is not expected to change significantly in the future, road transportation will continue to play an important role in the future mix of the different modes of transportation.

As volumes are expected to grow, governments need to think about ways to deal with and plan for the additional freight.The objective should be a safe and secure, clean and fluid, as well as affordable transport system.

Self-driving vehicles will help in many ways to realize this vision on the roads: starting with absorbing additional volume without expanding the road system as autonomous vehicles drive closely together. They are also expected to be safer and more fuel-efficient. In addition, traffic flow will improve and congestion reduce. This means less investment, less fuel, less CO2 emissions, less time lost for driving and parking, and less accidents.

Nowday , everything is changing everyday after time and technology's development . It's more progressive , more modern and the transportation is too . Everytime , you go out in the street , you always see cars are moving everywhere . The transportation ' s industry invents and breaks the limit of speed and travel demand . There is not only how to go from here to there , we want to see the beauty and delicacy in each section of the road passing by the cars . Shapes , intrustions , sizes , prizes ,... of the cars are various . With this development , one day , in the future , we will sitting in the machine seeming a globe moving without wheels . Or we will not have to pay for any charges of gasoline , that's a good change for us and a good new for enviroment . May be we don't have to move by any machine or motor anymore , we can go from Vietnam to London immediately by pressing a buttom . Don't you see , everything can be happen . The important is what you do today , to change the world .

P/s : There are so many mistakes of grammar and vocabulary , I expect that you can fix it for me .

Marine pollution is a growing problem in today’s world. Our ocean is being flooded with two main types of pollution: chemicals and trash.

Chemical contamination, or nutrient pollution, is concerning for health, environmental, and economic reasons. This type of pollution occurs when human activities, notably the use of fertilizer on farms, lead to the runoff of chemicals into waterways that ultimately flow into the ocean. The increased concentration of chemicals, such as nitrogen and phosphorus, in the coastal ocean promotes the growth of algal blooms, which can be toxic to wildlife and harmful to humans. The negative effects on health and the environment caused by algal blooms  hurt local fishing and tourism industries.

Marine trash encompasses all manufactured products—most of the plastic—that end up in the ocean.  Littering, storm winds, and poor waste management all contribute to the accumulation of this debris, 80 percent of which comes from sources on land. Common types of marine debris include various plastic items like shopping bags and beverage bottles, along with cigarette butts, bottle caps, food wrappers, and fishing gear. Plastic waste is particularly problematic as a pollutant because it is so long-lasting. Plastic items can take hundreds of years to decompose.

This trash poses dangers to both humans and animals. Fish become tangled and injured in the debris, and some animals mistake items like plastic bags for food and eat them. Small organisms feed on tiny bits of broken-down plastic, called microplastic, and absorb the chemicals from the plastic into their tissues. Microplastics are less than five millimeters (0.2 inches) in diameter and have been detected in a range of marine species, including plankton and whales. When small organisms that consume microplastics are eaten by larger animals, the toxic chemicals then become part of their tissues. In this way, the microplastic pollution migrates up the food chain, eventually becoming part of the food that humans eat.

Solutions for marine pollution include prevention and cleanup. Disposable and single-use plastic is abundantly used in today’s society, from shopping bags to shipping packaging to plastic bottles. Changing society’s approach to plastic use will be a long and economically challenging process. Cleanup, in contrast, may be impossible for some items. 

Nonetheless, many countries are taking action. According to a 2018 report from the United Nations, more than sixty countries have enacted regulations to limit or ban the use of disposable plastic items.

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in my neighborhood, some people throw rabbish in street. i will encouraged people and my family cleaned streets and i will ask them to put rabbish in to the rabbish bins

Nowadays, teenagers have many leisure activities such as: reading books, listening to music, watching television, playing sports and so on. However, I think the best activity for teenagers is hanging out with our best friends.

First, hanging out with our friends helps us widen communication skills. For example, when we go for a walk in the park, supposing we meet the foreigners, surely we will greet and talk to them. I think communicating with foreigners helps us improve English a lot.

Secondl, hanging out helps us recover more interesting entertainments. Of course, we can recover alone, no matter how happier if we hang out with our best friend.

Last but not least, hanging out with our best friend can save our beautiful moments. Our group gather to take a photo with many different postures. This is one of the collections which is very memorable for us after a trip.

To summarize, the best leisure activity is hanging out with our best friends beacause of several reasons mentioned above. Personally, I usually hang out with my best friend on weekends and I believ that we should spend more time on hanging out with our best friends.

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