Classes are over.The students are 什么 the classroom

the classes are over the students are c()the classroom填什么? The students are cleaning the classroom. There are ______ students in the classroom. look!the students are c_____ their classroom those are students clean the classroom There are over fifty students ----the job 中----填什么 Some students are sitting in the classroom while___ are play some students are writing in the classroom ,where are the students are discussing in the classroom.the Classes are over,in the playground,boys,play football,girls, all the ____(class,classes ,student,students)are _____(frien