增加：在缺词处加一个漏词符号(∧)，并在其下面写出该加的词。

删除：把多余的词用线(＼)划掉。

修改：在错的词同下划一横线，并在该词下面写出修改后的词。

注意：每处错误及其修改均限一词。只允许修改10处，多者(从第11处起)不计分。

    The summer job is very much popular among some university students. Long before the end of a school year, students start their summer vacation job search. They send letters to businesses, going to job interviews, and ask our friends and relations for help. By June the students usually had found jobs and then they begin preparing enter the world of work.

    Reasons for wanting a summer job differs from student to student. Some students work to pay their school expenses, some work to gain experience or just to fun. Salesmen or waiters are two of the most common job that students try to find.

下列几种估测中，最符合实际情况的是（　　）

根据句子理解，用选词中的正确形式填空。