pick (it) up ,主语是some rubbish ,it用变成them吗

pick it up 如果主语是复数,那么“it”换不换?有没有可能是pick them up如题 pick (it) up ,主语是some rubbish ,it用变成them吗 是pick it up还是pick up it? pick it up,please是祈使句吗? pick it up pick it up 跟pick up it的区别? 当pick up 解释为拾起的时候,是pick up sth还是pick sth up?有时候看到pick it up,有时候看到pick up the pen 这样的句子,到底是怎么样呢? There is some money on the floor,please _______. A pick up it B pick them up C pick it up答案是C为什么 8.Don’t throw litter around.Please__________.A.pick it up B.pick up it C.pick up them答案怎么是第二个,不应该是A吗 pick up it和pick it 有什么区别? pick up it和pick it 有什么区别? Don't throw litter around.Please____.(A).pick it up(B).pick up it(C).pick up them(D).pick them uplitter是不可数,为什么正确答案是(D)而不是(A)呢? pick it up什么意思快! When we see rubbish,we should_________.A.pick it upB.pick them upC.pick it up Your book is under the chair.PLease____.A pick it B pick up it C pick it up there is a pen on the floor .can you ____?A.pick up it B.pick it up C.pick up them D.pick them up 有pick up it 这么用的吗?与pick it up怎么区别? Please pick it up.为什么it要放pick up的中间