an English riddle,What can go up a chimney down,but can not go down a chimney up.英语谜语，不是翻译（再说我也知道意思）

why is ten afraid of seven?an english riddle 急需English riddle给一个English riddle 英语riddle大家快来猜》》》》》》An English riddle .In English what word starts with T ends with T and has T in it ,and it's a household object and most people will have it in their home. an English riddle,What can go up a chimney down,but can not go down a chimney up.英语谜语，不是翻译（再说我也知道意思） english riddle(1)what helps you keep your teeth together? A riddle wrapped in a mystery inside an enigma? riddle &puzzledifference? Riddle是什么意思 riddle是什么意思 what month do soldiers hate?It's an English riddle.2:How many feet are there in a yard?3:Why is an empty purse always the same?4:What book has the most stirring chapters?5:What kind of dog doesn't bite or bark?6:What is the smallest room in the world 我想要9个英文谜语 English Riddle我要9个英文谜语 English Riddle要是英文的.最好也有中文解释要分3个级别:(每样三题就可以) easy容易; medium中等; Difficul困难; 麻烦! an English. And an English teacher是什么意思? Mike is an English put on an English an English-Chinese 翻译 she had an english keep an English notebook 英译中：an English evening