【Itiscleanwhenitisblack.Itiscleanwhenitisblack.Itisdirtywhenitiswhite.what'sit?】
2021-06-01 65次 反馈错误 加入收藏 正确率 : 100%
题目内容：
It is clean when it is black.
It is clean when it is black.It is dirty when it is white.what's it?
优质解答
赶紧的时候是黑的,脏的时候是白的,这是什么东东呢?
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