You have been buried in books for almost three hours .Why no

You have been buried in books for almost three hours .Why no I have been over my homework for three hours how,have,in,today,class,long,you,been,for,hours,twelve,over如 Why you no have been in class the last couple of days? They have been working for__whole three hours. 句型转换 1.They have been talking for the whole three hours.（改成一 一空一词They have been taking for the whole three hours 改一般疑问句__ i have been living in shanghai for three years We have been in China for three years ago .改错 首字母填空We have been in Australia for three days —________ have you been here?— For three years HOW LONG HAVE YOU BEEN SKATING A TREE MILES B THREE HOURS