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九州万博哪个好用-体育投注英国Bet365

时间:2016-09-21 20:47:44 来源: 作者:搞笑谜语 点击:
What is black ,
谜题是:What is black when it is clean and white when it is dirty?
(打一物体)
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答案是:A blackboard黑板