Read the text and circle the letter A, B, C, or D to indicate the correct answer to each of the questions.
① According to a study, only6 out of 10 children between 5 and 14 years ___(1)___ join in sport outside of school. More boys than girls play sport. There ___(2)___ some benefits of playing sport for children. Firstly, sport helps them improve fitness and sleep. When they play sport,they become fitter and ___(3)___ better. Secondly, sport reduces the risk of obesity. The ___(4)___ is they can burn calories when playing sport. Finally, when children play sport in teams, they can improve their social skills. They work ___(5)___ their teammates to play well and win the game.