是pick it up还是pick up it?

是pick it up还是pick up it? pick them up还是 pick up them pick up him还是pick him up pick it up 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? pick one还是pick up one? pick it up,please是祈使句吗? pick up pick up pick up 对snacks提问用them还是it?例如：pick them up 还是 pick it up pick it up 跟pick up it的区别? look at the paper on the floor,please pick it up 还是 pick them up? 英语语法pick the rubbish up 还是pick up the rubbish 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? There is some paper on the ground.Please___.pick it uo还是pick them up?