all that can be eaten_____eaten upA.are being B.has been C.had been D.have been 为什么?为什么用三单的形式？

be all that one can be开开开 美国陆军征募标语be all that you can be是什么意思 all that can be done been done.why is all that?没有that不行吗? all that can be done has been done. be all you can all that can be done has been done.中的that为all that can be done has been done.中的that为什么不能用which替换? I can be tough ,I can be strong .But with you ,it is not like that at all at all . That will be all . That will be all all that can be eaten___eaten up答案是has been all为什么后面是单数? That all mean to be i can love you and wait you until you can love that,can,be,all,that,done,is 组句 并说出意思 Everything _____ has been doneA.which we must doB.all that can be doneC.can be doneD.that can be done选哪个?为什么? _ can be done has been done.A.All B.All that C.All what D.Anything They came to the conclusionn.________ by a computer.A.that not all things can be done B.because of not all things be doneC.being not all things can be done D.because not all things can be done how can that be? how can that be All that can be done is to convert energy from one form into another.