bài 2.

1. this is a writing contest (dòng 1 )

2. the competition is open to all contrant (dòng 2 )

3. the winner will get 20 milion VND for the first prize  (dòng 2,3)

4. you can get more information from website www. protectenvi.com (dòng 4 )

5. no because i'm not good at writing 

 bài 4. 

high school student aren't allowed to ride mototrbike to school due to these reasons. First, they are not old enough to get the driving license. Second, they don't learn the traffic law properly. Third, they think riding a motorbike is cool and they do that to attract their friends and that could lead to some accidents. In a word, we should teach children how to drive safely and when to drive