Questions 18 ～ 21 are based on a letter to an editor of a TV program giving views about boxing. Why doesn’t the government take actions to ban boxing according to the writer of the letter
A．Because according to the government, boxing is a very good sport. B．Because according to some evidence, there is no harm to take the sport. C．The writer of the letter doesn’t say anything about it. D．Because the government wants the common people to make a stand first.