设变量x，y满足约束条件$\left\{\begin{array}{c}y\le x\\ x+y\ge 2\\ y\ge 3x-6\end{array}\right.$，则目标函数z=${\left(\frac{1}{2}\right)}^{2x+y}$的最大值为____ 

—Sorry. I ________ to set my alarm clock.

温家宝总理在《政府工作报告》中指出，继续推进教育优先发展，为国家发展提供强大的人力资源支撑。之所以要坚持教育优先发展，是因为教育（   ）

Brian's school life is very busy. Recently Jenny, Danny and he ____ some money for their school basketball team. Brian baked cookies and ____them in ____an hour. Danny invented a new desk but everyone thought it was ____ dangerous ____ do homework on a bicycle. Li Ming thought that____ cookies was a great idea to help others. His teacher, Ms. Liu wanted ____a shop to raise money ____ school activities. Li Ming ____his classmates would ____ the idea.