All the students are back at school.

(All the students )are back at school.对括号里提问. （ ）are back at All the students are back at school.句中at能否换成to?为什么? All the students are back at school on the first day of the are all the students back at school?is there a new building? ________are back at school.　　A.All the students　　　 B.All stu ---So you are back; are all the students present at the meet All the students are back ______ home. look,() students are happy at school A.the all B.all the C.t All the students are back ____ home.A.to B.at C./ back the are school students at 这几个词怎么造句 The students are at school.对at school.提问 All the students enjoyed themselves at the school party last