2.？ Ask for leave because of the exam. For example, driving test, IELTS TOEFL test, teacher qualification test and so on. Counselors in universities still encourage students to learn more knowledge and skills. After all, no matter how many skills are overwhelming, one more certificate will lead to another way out.
3.？ The reason for the ticket. Conventional but also force majeure. It can be said that you can't buy tickets. For example, during the National Day holiday, you can only buy tickets on the 29th, and you can't buy tickets after the 30th.
It's ok to ask for leave, but not too often. After all, counselors are experienced people who have gone to college, but sometimes they turn a blind eye, so please grasp the scale. In fact, college life has been very relaxed. It is understandable that everyone wanted to find another reason to take time off for some unspeakable reasons. However, if you are skipping classes, it is still not recommended that you take time off. After all, learning knowledge is the purpose of our university study.