All students are at school.变为否定句怎么变

All the students are back at school. The students _____ at school todayA.all are B.are all C.all D.are not All students are at school.变为否定句怎么变 look,() students are happy at school A.the all B.all the C.they all (All the students )are back at school.对括号里提问. （ ）are back at school? All the students are back ______ home.All the students are back ____ home.A.to B.at C./ All the students are back at school.句中at能否换成to?为什么? We students are supposed to work hard at all the subjects.这句话中的we students是什么意思 急求帮忙勾思英语作文----Are sports good for students?Should all students play sports at school? 连词成句.on ,are ,at ,the,home ,students ,all ,Sundays(.) back the are school students at 这几个词怎么造句前面多个all 咋造 All the students are back（）home.a.to b.at c./ All the students are back ____ home.A.to B.at C./ Are all the students chinese是什么意思? they are ------ students 空里用all 还both Are all the students _____?(here) All of us are not students We are all students的同义句?