040.
What happened to me that day is just unbelievable. The first thing to go wrong is that all the parking spaces were taken. We had to park on the grass and hoped that we would not get a parking ticket. When I got to the admissions office, there was already a long line of students waiting. By the time it was my turn, two of the courses I needed were filled and I had to go back to my adviser and make out a whole new timeable. Although I did sign up for all my courses, I missed lunch. The next thing to go wrong is that the bookstore had sold out one of the required textbooks. As I was leaving, I wondered what else could possibly happen, then I saw a policeman standing beside my car and writing out a ticket.

答案解析：
(1) 正确答案为A。根据there was already a long line of students waiting. 已经有很多学生排了长长的队在那里等着了。可知，说话者为学生，因此A项正确。
(2) 正确答案为C。根据We had to park on the grass and hoped that we would not get a parking ticket. 我们不得不把车停在草坪上，希望不会被开罚单。可知，说话者被开罚单的原因是他把车停在了错误的地方，因此C项正确。
(3) 正确答案为B。根据文中提到的几件不顺利的事，包括没地方停车，排队选课，课满必须改时间，错过了午饭，指定教材卖光了，被开罚单，可知，说话者这一天非常不走运，因此B项正确。