All the students are back at school.句中at能否换成to?为什么?

Are all the students chinese是什么意思? Are all the students _____?(here) All the students are back at school. The students ( ) doing sports. A.are all B.all are C.all can D.can all The students _____ at school todayA.all are B.are all C.all D.are not students are the room music all in the(.)连成句子 All the students are reading in the library in________(silent) All of the students are reading for the coming e___. all the students are having great fun(同义句)all the students are having great fun(同义句)改成all the students are having__(一空) look,() students are happy at school A.the all B.all the C.they all All the students are ______(反对)my plan except Tom. The students and I are ___(both all) good friend 连词成句：of,the,Chinese,are,all,students all _____ the Chinese students are League members. all of the students are here.let's s____our class All the students are talking about theirPets ______(noise) All the students are very excited什么意思 Are all the students here today?的同义句