All the students are back ______ home.

All the students are back ______ home. All the students are back ____ home.A.to B.at C./ ______ hard all the students are studying. (All the students )are back at school.对括号里提问. （ ）are back at All the students are ______(反对)my plan except Tom. ---So you are back; are all the students present at the meet All the students are back at school on the first day of the All the students are back at school.句中at能否换成to?为什么? are all the students back at school?is there a new building? 连词成句.on ,are ,at ,the,home ,students ,all ,Sundays(.) All the students are l___school and going home after class.S It is five past two in the ______.All the students are outsi