一、语法填空(根据课文内容完成短文）
The Olympic Games are the 1________ (big) sports event in the world. There are two kinds of Olympic Games. 2________ is the Summer Olympic Games, and the other is the Winter Olympic Games. Both of them are held every four years. All countries can take part 3________ their athletes reach the standard to be 4________ (admit) to the games.
