The key answer of exercise 2

championship

• "match," "game," and "race" are events or competitions where participants compete against each other directly.
• "championship" refers to a series of matches or games to determine an overall winner.
• It involves multiple matches or games, making it different from the others, which are individual events or competitions.

ride

• "hit," "throw," and "catch" are actions related to manipulating or interacting with objects (e.g., a ball).
• "ride" is different because it involves motion and transportation (e.g., riding a bike, horse, or vehicle).
• The other three are related to manipulating or interacting with objects in a sports or game context, while "ride" is more about transportation or movement.

diving

• "horse riding," "cricket," and "cycling" are activities that involve movement on land.
• "diving" is different because it involves entering and moving through water.
• The other three activities are land-based, while "diving" takes place in a different environment, making it the odd one out.

football

• "football" is the only sport among the options that primarily involves using the feet to control and move the ball.
• "badminton", "table tennis", and "volleyball" are sports where players use their hands (rackets or paddles) to hit the object (shuttlecock, ball), making them similar to each other.
• Football, on the other hand, primarily involves the use of feet, making it different from the sports where hands are more prominently used.

pool

• "court," "pitch," and "track" are surfaces used in various sports and games.
• "pool" is different because it refers to a type of water basin used for swimming and other water activities.
• The other three are land-based surfaces associated with sports, while "pool" is associated with water-related activities.