how,have,in,today,class,long,you,been,for,hours,twelve,over如何连词成句,

how,have,in,today,class,long,you,been,for,hours,twelve,over如何连词成句,
how,have,in,today,class,long,you,been,for,hours,twelve,over如何连词成句,

how,have,in,today,class,long,you,been,for,hours,twelve,over如何连词成句,
You have been in class for over twelve hours long today.
你今天已经上了超过12小时的课了.