The task of being accepted and enrolled(招收)in a university begins early for some students. Long【C1】______they graduate from high school. These students take special【C2】______to prepare for advanced study. They may also take one of more examinations that test how【C3】______prepared they are for the university. In the final year of high school, they【C4】______applications and send them, with their student records, to the universities which they hope to【C5】______. Some high school students may be【C6】______to have an interview with representatives of the university: Nearly【C7】______, and usually very frightened, they are【C8】______to show that they have a good attitude and the【C9】______to succeed. When the new students are finally【C10】______, there may be one more step they have to【C11】______before registering for classes and【C12】______to work. Many colleges and universities【C13】______an orientation(情况介绍)program for new students.【C14】______these programs, the young people get to know the【C15】______for registration and student advising, university rules, the【C16】______of the library all the other【C17】______services of the college or university. Beginning a new life in a new place can be very【C18】______. The more knowledge students have【C19】______the school, the easier it will be for them to【C20】______to the new environment. However, it takes time to get used to college life.

【C1】

A．as

B．after

C．since

D．before