填介词:The students are singing ( )the classroom

填介词:The students are singing ( )the classroom 改为一般疑问句：The students are singing in the classroom? The students are singing with p____.横线上填什么? the students are c()the classroom填什么? Listen!Many birds are singing()the tree 填什么介词 (The students)are singing in the classroom.就括号部分提出问题 （1） Some students are in the classroom.They are singing （合并一 They are singing in the classroom.对"are singing"提问 They are singing in the classroom.对are singing 提问 look!the students are singing anddancing The students are cleaning the classroom. The students are (c ) the classroom.括号里填以C开头的词.急要!1