动词不定式作定语和状语的区别

老师您好，有四个小句子的成分有点拿捏不定请您来分析一下。

1、

第一段中圈圈的of是连接了the specialized work的同位语peer review么

2、Publishers have responded to the demand that they make their product free to readers by charging their writers fees to cover the costs of preparing an article.这句话中to cover the costs of preparing an article是不定式作目的状语么还是后置定语呢

3、It can be learned that open access terms allow publishers some room to make money.这里的问题也是to make money是后置定语么还是目的状语呢

4、Scientific publishers routinely report profit margins approaching 40% on their operations, at a time when the rest of the publishing industry is in an existential crisis.这个句子里的routinely是修饰逗号前这一整个句子的么

谢谢各位老师