英语IQ题！下星期四就交了！急啊！！！

1.What letter is a body of water? 2.What is it that found in the every center of America and Australia? 3.Why is a river rich? 4.Which letter is very useful to a deaf woman? 5.Which runs faster,heat or cold?Why? 6.What is it that nobody wants but nobody want to lose? 7.What two words contain thousands of letters? 8.What has teeth but cannot eat? 9.What starts with T, ends with T, and full of T? 10.What letter is a question? 1.C(sea) 2.r 3.because it has two banks 4.i(eye) 5.heat runs faster,because u can catch a cold 6.lawsuit 7.mailbox 8.comb 梳子9.Teapot 茶壶10.Y

4F
the others I don't know