Translation of spunky in Spanish

I am asking you to give me a reply as soon as possible so that we can proceed. Have you ever tested the new version? Many users are waiting for it, and are sending me lots of emails about it.
There might be another reason why the house was hit. Some houses have a little infrastructure problem and cannot protect themselves against flash lights. That means they are in constant risk of fire which can lead to catastrophic outcome.
I'm learning German for a year. I do not write well, but I hope to improve soon. This is precisely why I want to make friends on vocabulix. In August I will fly to Berlin, it will be my first time.