look at the paper on the floor,please pick it up 还是 pick them up?
问题描述：
look at the paper on the floor,please pick it up 还是 pick them up?
答
pink it up
答
pick it up ，paper不是不可数的吗
答
答案：【 pick it up 】才对
解析：因为paper是个不可数名词,所以用单数it
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答
pick it up.
it指代the paper,单数。