Verb conjugation of "erforschen" in German

Please let me summarize: The main problem of the project was the inability of the program to print the screen. The reason is that massive download may stall the connection at even 3Giga, which will result in congestion.
I was a little confused because I recognized the voice and I had booked at Luisa's guest house. She explained me that she was sharing the phone with her neighbor and her neighbor was not honest.
I got to the southern tip of the island and visited the light house. I also remember to have visited some turtles or crocodiles nearby. I was not the only one who drove around the island by motorcycle.