Translation of Aufopferung

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.
I have sent you my e-mail address. If you want to write me there, I could view the messages immediately. It would be easier than on the Vocabulix forum, as I'm not online often enough.
Many thanks for the corrections. Exactly what I needed to be happy. I want to learn French because it's a great language and because it sound so romantic to me. There is a lot more to improve.