I' can't decide if the intenet is a good or bad, thinks for teenagers .
This is a difficult question because the internet is both good and bad.
The internet is fread becasuse you can communicate whit students.
the ... Is a dangerous since creat addictons to the computer.
some programs con be danngerous..
therfore ,, there isn't reallly on asnwer to your questions. Like many thing , the internet can be good or bad
can/ can't (poder pres) could/ coulldn't ( poder passat)
should/ sholdn't(hauries o si vols)) must/musn't( porhibiio o oblig) don have to has to ( han de )
because of = per culpa de