Where Are The Students And What Are They Doing?

There are  D students in class 408. Student number  A is  B in the  C . Student number  A is reading  D books in the  C . Student  A is eating  D pizzas in the  C . Student  A is  B while  B . Student  A has been sleeping for  D days. Student  A has been eating for  D days. Students  A ,  A , and  A are in the  C shouting “Save energy! Turn off the  E ! Teacher  F asks, “Where is student  A ?” Student  A answers “He/She is in the  C . Teacher  F asks, “What is he/she doing?” He/She is  B . All of the students in class 408 ask, “What is Teacher  F doing?”. Oh! Teacher  F is  B in the  C . What a crazy day for the teachers and students of class 408!