根据句意和汉语提示，在空格中填入正确的单词 。
⑴North points up on a ____ (地图).
⑵There is a tall tree____ (在。。。。。。的后面) the teaching building.
⑶____ (没有什么) is difficult to the men who will try.
⑷____ (十月) 1st is the National day of the PRC.
⑸He always ____ (抄写) new words on pieces of paper and reads them aloud.
⑹It's____ (礼貌 ) to be quiet in the library.
⑺No one can____ (成功) without any hard work.
、
、
，
则三人中恰有两人合格的概率和三人中至少有一人合格的概率分别是（ ）
