Translation of Arbeitsbewilligung

There is a small misunderstanding about the homework. I can do them, but they will be too confusing? I am trying to find the article from where I took the sentences in order to ease the task for all students.
In the attachment you will find the reviewed documents. Your Portuguese is quite good. I understood everything. If you write the same text in German, I can know what you wanted to say.
I see that you want to improve your English. If you understand Spanish, we could talk on ICQ. If you're online, we can chat there. Can you please give me your email and other contact details.