( )The students are busy ___over their lessons.Agoing Bwith

( )The students are busy ___over their lessons.Agoing Bwith The students are kept busy reviewing their lessons The students in Grade 3 are busy revising __ their lessons A the students are busy （）their homework The students are busy with their homework 同义句转换 The students each _____ their lessons. the students is busy for their exams；the students are having some students are busy ( ) their homework. The students are reviewing their lessons to ( ) ( )（做准备）the the students are working very hard at their lessons改为同义句什么 什 the students is busy ( )their exams THE STUDENTS ARE BUSY WITH THEIR HOMEWORK ALL THE TIME同义句.