`1.` three to four

`=>` Thông tin: American children often spend from three to four hours a day watching TV

`2.` entertain

`=>` Thông tin: While television can entertain and inform our children of news and real knowledge,...

`3.` important activities

`=>` Thông tin: Time spent watching televisions takes away from their important activities such as reading books,...

`4.` less exercise 

`=>` Thông tin: If children watch TV a lot, they may have lower grades at school, read fewer books and do less exercise or even be overweight

`1.` three to four

`->` Dẫn chứng: American children often spend from three to four hours a day watching TV.

`2.` entertain

`->` Dẫn chứng: While television can entertain and inform our children of news and real knowledge, it may also influence them in bad ways.

`3.` important activities

`->` Dẫn chứng: Time spent on watching television takes away their important activities such as reading books, playing outdoor sports, doing homework, having family gatherings and developing social skills.

`4.` less exercise

`->` Dẫn chứng: If children watch TV a lot, they may have lower grades at school, read fewer books and do less exercise or even be overweight.