【急】这篇英语课文有什么语法问题?求改错.下面是文章要求：必须用上popular;makefriendsonline;learnfrom;watchtheworld;knowledge;wastetime（节约时间）;controloneself（控制自己）Apopularsocialbehavior

　　【急】这篇英语课文有什么语法问题?

　　求改错.下面是文章

　　要求：必须用上popular;makefriendsonline;learnfrom;watchtheworld;knowledge;wastetime（节约时间）;controloneself（控制自己）

　　Apopularsocialbehavior

　　Thereisapopularsocialbehaviornow.Itissomestudentsmakefriendsonline.

　　Ithassomeadvantage.Ontheonehand,thefriendsyoumadearefrommanydifferentcountries.Theycanmakeyoulearnfromthemandknowaboutalotofinterestingknowladgeandwatchtheworld.Ontheotherhand,itcanalsomakepeoplefeelrelaxedandfun.SoChildrenwillhavefunlearningit.

　　Anditalsohasdisadvantage.ChildrencannotcontrolthemselveswellSochildrenwillwastetimetosurftheInternet.Andtheywillbeworseandworse.

　　Ithinkifchildrencouldcontrolthemselves,makingfriendsonlineisagoodbehave.Ifnot,theparentsshouldhelptocintrolthem.