— _____ would you like, please?
—A hamburger.
A:What
B:Are
C:Do
D:Does
仿写词语
安安静静 开开心心 ____ ____
用括号内所给词的适当形式填空
已知(3x2y3)•(﹣4xmy4)•(5xyn)=﹣60x5y10,求m,n的值.