set up→ establish (a new state, a government, a business), institute (custom, inquiry, restrictions, democracy, rule, government)

　　sharp→ abrupt, drastic (rise and falls)

　　show→ demonstrate, evince, manifest

　　→ reveal, divulge

　　side→ aspect(of a problem)

　　small→ minor/insignificant (problems, differences etc), marginal (differences)

　　therefore→ consequently

　　thing→ element, aspect, object, factor, consideration

　　too→ excessively, inordinately, unduly

　　too many→ an excessive number of, a disproportionate number of

　　too much→ excessive(ly)

　　try→ endeavor, strive

　　understand→ appreciate

　　ups and downs→ vicissitudes (of war, history, fortune)

　　very→ extremely, in the extreme, immensely, intensely

　　yield→ produce(results)

　　以上就是GRE作文替换词的全部内容，大家如果感觉某些词用的太过频繁，不妨换个词，往往能够为文章增色不少，最后祝大家都能考出好成绩。