— Who ____ (blow) out the candles last night?
— Ann did.
Mr. and Mrs. Brown would like to see their daughter _____, get married, and have kids.
一个不透明的布袋中分别标着数字1,2,3,4的四个乒乓球,先从袋中随机摸出两个乒乓球,则这两个乒乓球上的数字之和大于4的概率为____ .