1.
There are both many good things and many potential dangers in social network 
It's important for parents to teach their children how to use social media wisely
Social network is the start of bad things like cyberbullying

2.

A recent report has said that many teenagers have contacted online with strangers and it makes them feel scared or uncomfortable.

Others receive onine advertising that is inapproriate for their age.

It is important that parents should be aware of what children are doing online.

Parents should make their children understand that they respect children's privacy.
However, parents want to make sure that their children are safe.

1 rides

2. collect

3. didn't go

4. bought

5. haven't plan

6. will go

7. have learnt

8. Has Peter visited

9. listening

10. didn't study

1 rides 

2 collect

3 did not go 

4 Bought

5 have not planned 

6 will go

7 have learnt

8 Did Peter and his parents visit

9 listening

10 did not study 

khó à nha...

cau 4 thieu than a tourist does cai cho revision for test

were

were

Theo mình thì cách phát âm giữa " for " và " four " có sự khác nhau. Vì " for " đọc ngân dài hơn " four ".

For:/fo:/

Four:/fo/

Exericse V:

31. B

32.C

33.C

34.A

35.D

Exercise VI:

36. A

37. D

38. C

39. C

40. C

Exercise VIIz;

41. D. time enough \(\rightarrow\)enough time

42. C. rises \(\rightarrow\) is rising

43. C. isn't telling \(\rightarrow\) don't tell

44. C. with \(\rightarrow\) \(\varnothing\)

45. C. taller \(\rightarrow\) tallest

Exercise VIII"

46.D

47.A

48.C

49.B

50.A

Nowaday,our education is improved more than before.We can have many way to learn,but a way I think it is the most useful is:''Studying abroad''.This way has many advantages.

Firstly,it will change our life,and you'll come back a new person.

Secondly,when we study abroad,we can see the world with many place,the distant land.Who in this world want to study abroad.Many students in Vietnam or different every year save for them a lot of money for a travel to travel through Europe or different,....

Thirdly,we can experience the professional education.The way teachers teach can be different from the way we are being taught now,we can be more active,quadrilatera.At first,I am sure that any students who have the trouble but it is the way to lead you to succeeding in your future.The professional education can help you maximize our ability,so to choose the true way to learn abroad is very important.

Fourth,we can learn a foreign language and improve our listening,reading,speaking skill,you can know more words,grammar and you can study history,culture,etc.

This is my idea,but conclusion,studying abroad is very useful.

Study abroad is a way of investing for the future, undeniably the fact that individuals returning to study abroad can find the job themselves with the desired salary more easily than Those who study in the country. Overseas qualifications are always an advantage in the job market, and you even have the opportunity to work in any country you desire based on your academic performance and endeavors. Therefore, you can make sure you and your family have a better future. Another benefit of studying abroad is improving your living skills. When you go abroad, you have to take care of everything from housing, meals, travel, activities and all the problems that arise during the learning process. This is the best way for you to live independently, to separate yourself from the protection, the cover of the family. You are trained to adapt to different situations and situations to create the foundation and experience when entering the real life. In the space of study, international students will receive things that for a young person is a treasure that can not be valued as experience, friendship, relationship, independence, confidence and maturity. .

Nowaday, traffic problem is the biggest problem that many people care about. In VN, I think the city where have the worst traffic is Ha noi.
The first problem is the traffic jam here. Why? In the rush hours of the day, there're too many people using the road. Last year, in 2013, many bridges was built so it happen less but in order to stop this, a kind of small car should be invented, people should go to works by buses instead of going by motorbikes...
The second one, as you know, the roads in VN is not as big and clean as the roads in the big countries. They're narrow, bumpy and some dirty so it’s really hard for the road users to drive safely. I think we should raise money to make the road in VN better and better.
But everyone knows that Vietnamese people are not respect and don’t follow the traffic rules. That’s the biggest reason for everything. They wear the helmet that not strong enough to keep they safe if the accident may happen, they ride too fast on the small roads… The traffic will never can be improve if they keep doing this.
At the end, I hope the traffic in VN will improve more.

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