Translation of auffordern

He also told me that he had build his scooter by himself. I could not understand how a doctor was able to build such a machine on his own. It seems that the circumstances made people capable of many things.
In the following pages I would like to talk about a topic which should concern everyone of us. It is a delicate topic which has been present as long as human beings have existed and it will last forever.
Thanks for the tip: We will add a lesson on colours! About the topical lessons around the home: Do you have specific words that you think should be added? It will take a while until we upload the new version.