Verb conjugation of "opter" in French

This is just a quick confirmation that Hans George accepted to study with you on the English-German tandem option. Please be helpful to other users and keep your conversation public. Both parties need to agree on that.
And in the end you still have not learned what you have wanted. I browse in online stores all day and come back empty-handed, or with items that I do not really need. Learn and think about it.
I have problems with adjectives, endings and articles. The grammar is so difficult. I am very happy to learn Spanish with you. What went wrong with the lessons? Thanks and best regards.