Verb conjugation of "existieren" in German

I will be visiting in Italy from April 10 to 15 in order to meet some old friends. I'd like you to attend a one-day course, maybe I can help you in learning something new. Please give it a try.
Productivity declines when it is too hot outside. Oscar therefore closed his laptop and production unit and headed towards the lake where his pretty girlfriend was waiting for him. Once he arrived he bought a ice cream as a surprise.
Write me back please. I am learning Spanish at a language school for about 5 years. I'm studying architecture. I like your picture very much. We say in German 'huebsch', and not 'schoen'?