题目

1． My friend is Tom Green ,Green is his f_______ name． 2． Mr. Gao is very s______,he never smiles in class． 3．The MP4 is too dear , I can’t a_____ it． 4． My lifestyle is d________from yours． 5． Twenty and twenty is n______． 6． This coat is too colorful ,can you show me a_______ one． 7． I must study hard so that I can go to Beijing U________． 8． Jeff went to Guilin last year and f_____in love with it．解方程（x-x2）2-4（x2-x）-12=0，若设y=x2-x，则原方程可化为______．