Translation:My mother, my father, my brothers, my sisters
I think it's important to make the language a part of your normal life. Try reading the news in German (news4kids and Nachrichtenleicht are both very simply written). Listen to German music (You can find a collection of German bands/singers here). I also recommend watching movies and TV shows in German (Das Erste Mediathek has a ton of shows, including some for kids, like Die Sendung mit der Maus). You could also try writing a short diary in German to practice every day or consider finding a pen pal/language exchange (you help someone who is learning your native language and they help you learn theirs).
Whatever you do, just make sure you keep doing it every day and make it a routine. I hope this helps! :)
Perhaps you're reading this discussion on an Android device?
I think I read that links with a specific link text don't work as links because touchscreen devices don't make it easy to check the destination of a link before following it.
Try opening this discussion ( https://www.duolingo.com/comment/3869006 ) on a PC/Mac.
After I practiced this sentence a few times I was like, Ich brauche Wasser!