1 three to four hours a day 

2 children can entertain , inform and keep them company

3 time spent watching televison takes away from important activities  and children are likely to have lower grades in school, read fewer books,exercise less,and be over weight

4 No they shouldnt

5 it's children's shows on public TV are appropriate but soap operas , aldult sitcoms and aldult talk shows are not

6 chép lại dấu chấm thứ 3 

1. Children in the United States watch an average of three to four hours of television a day.

2. Television can entertain, inform and keep our children company,

3. Children who watch a lot of television are likely to have lower grades in school, read fewer books, exercise less, and be overweight.

4. No, they shouldn't

5. Children's shows on public TV are appropriate, but soap operas, adult sitcoms and adult talk shows are not.

6. Set certain periods when the television will be off.