题目内容：
Football is the most popular sport in the fall in the United States.The game originated as a(an)(21) sport more than seventy-five years ago.It is still played by almost every college and university in the country,and the football stadiums of some of the largest universities
(22) ＿as many as 80,000 people.The game is not the same as European football.There are eleven players in each team,and (23) in padded uniforms because the game is rough and injuries are likely to occur.The (24) of the game is to carry or throw from one person to another the ball across the opponent.s goal,or scoring line.(25) has not attended a large college football game hus missed one of the most colorful aspects of He American college life.( 26) the two halves of the game,the playing field if taken over by the bande（乐队）of the rival institutions,(27) take turns doing intricate marches and executing interesting formations.The student spectators are led in cheering for their team by trained,uniformed student cheerleaders, (28) are pretty girls.Outstanding high school football players are usually encouraged to come to a college and university (29) offers of scholarships and free room and board.Football is so popular and the urge to win is so keen,that many colleges actively (30) outstanding players for their student body.Attendance at football games is so large that it is not unheard of for a college or un
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