pick it up 跟pick up it的区别?

pick it up 跟pick up it的区别? pick it up pick up pick up pick up 是pick it up还是pick up it? pick out;pick up;pick over区别 pick up it和pick it 有什么区别? pick up it和pick it 有什么区别? pick them up还是 pick up them pick up him还是pick him up pick out,pick up,pick at,pick on区别? pick at pick from pick up pick out pick it up什么意思快! pick it up,please是祈使句吗? When we see rubbish,we should_________.A.pick it upB.pick them upC.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 The photos are under the bed.Please____.A.pick up it B.pick up them C.pick them up