When children play games, they don't need a referee(裁判). They have their own rules in playing games. They seldom find it necessary to keep scores because they don't worry about who wins or loses. They even don't c____ if the game is not finished. Yet, they like games that depend a lot on luck, so that their a____are not so important. They also enjoy games that move in stages in which they choose leaders and pick up sides.

    Grown-ups r____find children's games exciting, and they often feel puzzled at why their kids play such simple games again and again. However, it is found that a child plays games for some important r____. He can be a good player without having to think whether he is a popular person, and he can find himself being a u____partner to someone who is more popular in real life. When it is his turn to be the leader, everyone follows his orders. This makes him feel more c____.

    It seems that when children play a game, they i____a situation under their control. Unlike real life, in this situation they make the rules themselves, and more importantly, everyone plays according to the rules. Those rules may be childish, but they make sure that every child has a chance to win.