Unlike most sports,which evolved over time from street games,basketball was designed by on

Unlike most sports, which evolved over time from street games, basketball was designed by one man to suit a particular purpose. The man was Dr. James Naismith, and his purpose was to invent a vigorous game that could be played indoors in the winter.

In 1891, Naismith was an instructor at a training school, which trained physical education instructors for the YMCAs. That year the school was trying 【B1】______ up with a physical activity that the men could enjoy 【B2】______ the football and baseball seasons. None of the standard indoor activities 【B3】______ their interest for long. Naismith was asked to solve the problem by the school.

He first tried to 【B4】______ some of the popular outdoor sports, but they were all too rough. The men were getting bruised from tackling each other and 【B5】______ hit with equipment. So, Naismith decided to invent a game that would incorporate the most common elements of outdoor team sports without having the real physical contact. Most popular sports used a ball. So he chose a soccer ball because it was soft and large enough that it

【B6】______ no equipment, such as a bat or a racket to hit it. Next he decided 【B7】______ an elevated goal, so that scoring would depend on skill and accuracy rather than on 【B8】______ only. His goals were two peach baskets, 【B9】______ to ten-foot-high balconies at each end of the gym. The basic 【B10】______ of the game was to throw the ball into the basket. Naismith wrote rules for the game, 【B11】______ of which, though with some small changes, are still 【B12】______ effect.

Basketball was an immediate success. The students【B13】______ it to their friends, and the new sport quickly 【B14】______ on. Today, basketball is one of the most popular games 【B15】______ the world.

【B1】

A．to have come

B．coming

C．come

D．to come