油皮和疯马皮:a red piece of paper 为什么red要放前面

a red piece of paper 为什么red要放前面 a piece of paper money a sheet of paper和a piece of paper的区别？ This is a piece of paper,Youcan get some news from it. What is it A PIECE OF CAKE a piece of chalk there was also a piece of paper on the bank where he had just put his clothes there was also a piece of paper on the bank where he had just put his clothes A piece of cake ! look! Quiz :a piece of cake !