阅读下面材料，在空白处填入适当的内容(1 个单词)或括号内单词的正确形式。
An American game that has traveled well is basketball. 【小题1】is now played by more than 250 million people worldwide in an 【小题2】(organize) way, as well as by countless others in informal games. Basketball began in 1891, when a minister, called James Naismith, 【小题3】 (ask) to teach a class of young men in Springfield, Massachusetts.
The class was well known 【小题4】being difficult to teach and Naismith was told to invent a new game 【小题5】 (keep) the young men busy. Then it 【小题6】 (be) winter and very cold outside. It needed to be a game that could be played indoors.
Naismith thought back to his childhood in Canada where he and his friends had played a game which had involved (需要) trying to hit 【小题7】 e big stone off a rock with smaller stones. He also remembered 【小题8】 (watch) rugby (橄榄球) players throw a ball into a box or fruit basket 【小题9】had been raised up. Naismith made up the 【小题10】 (rule) for the game in less than an hour, Most of them still apply in some form today.
