What is the cause of the long waiting?
[A] The computer of the place goes wrong.
[B] There aren't enough people selling tickets.
[C]The tickets are not many.
[D] They haven't mentioned about it.
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!