几乎没有人知道篮球是如何起源的
()people know how basketball ()
Naismith班里有18个男生,他把他们分成了9人的两支球队,并教他们如何进行这种新运动
Naismith had a class of 18 boys。
he ()them ()two teams of nine and taught them (—————〕
这种深受欢迎的运动被男女老少所喜爱
This (kind)sport ()by men and women ,and by young and old