英语趣味智力题1.From what number can you take half and leave nothin

英语趣味智力题
1.From what number can you take half and leave nothing?
2.what two word have thousands of letters in them?
3.what 5-letter word has 6 left when you take 2 letters away?
4.what kind of dog never bite?
5.where does afternoon always come before morning?
6what is pronounced like one letter,written with three letters,and belongs to all animals?
7.what number gets bigger when you turn it upside down?