脑筋急转弯：1 What's black when it is clean and white it is dirty?2 What kund of dog never bites?

一道英语脑筋急转弯...What's the white black white black white black 脑筋急转弯Look!The boy is black and blue all over.What's the Chinese for black and blue? 脑筋急转弯：1 What's black when it is clean and white it is dirty?2 What kund of dog never bites? what's the beginning of everything?脑筋急转弯 what's the most diffcult train to catch?脑筋急转弯, 脑筋急转弯：What's the longest wurd is the world? 脑筋急转弯:what's the longest woed in the world? 解答英语脑筋急转弯1What's black when it's clean and white when it's dirty?2What has a lot of teeth but no mouth?3Which is the smallest room in the word?4What goes up but never comesdown?5What can peple make but not see?6What has keys but no 脑筋急转弯.1 what changes a pear into a pearl? 脑筋急转弯：If two’s company and three’s crowd,what’s four and five? 脑筋急转弯:what is full when it's used and empty when it's at rest 脑筋急转弯：What letter is an animal 脑筋急转弯：What table has no legs? 脑筋急转弯 What month do soldiers hate? who is always wearing a black coat?脑筋急转弯 what's the end of the world?英语脑筋急转弯……不是翻译句子 请问一道英语脑筋急转弯Today is our country's birthday .What date is it? what is smaller than an ant‘s mouth 脑筋急转弯 急.要准哦.别错