Is the tiger near the rock?
A:Yes, it is.
B:Where is rock?
C:No, he doesn't.
(Ⅰ)求函数y=f(x)的解析式和定义域;
(Ⅱ)当角B为何值时,△ABC的面积最大.
— Would you like to fly a ____ with me?
— Sorry, I can't. I have to do my ____.