阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。

    Since a university education in the United States ____(be)very expensive, most students work in addition to studying. Students ____(usual)work part-time, but some students take full-time jobs.

    A typical job for a students would be working ____a waiter or waitress. Other typical off-campus jobs would include being a clerk in a store or delivering pizza. Sometimes students also find jobs on campus such as cleaning, working in a cafeteria or library or answering ____(telephone). Most student jobs are entry-level and low paying, but have flexible schedule ____(allow) students to attend classes.

    Sometimes students also hold more responsible positions such as managers, or if they are lucky, positions in their area of study, ____ they hope will help them find employment after they graduate.

    ____double responsibilities of working and studying result in a very busy, ____ (stress)life for some students. ____, it is the only way for many people to finance their college educations. Some Americans believe that the work experience is good for the students ____(they)since it gives them a taste of “the real world” outside the school.