Verb conjugation of "grunt" in English

I will send you a summary of the activities from our last vacation last year, but I will be brief, so I will send only the highlights. It is best if we discuss everything, in the beginning of August.
Thank you for your email! A little question about yourself. How old are you? I think the Americans are using the word color and not colour, but I understand if you are not sure about it.
I speak a little English. I would be happy to teach you German as well. May I can introduce myself? My name is Jürgen and I live in Dusseldorf. 25 years ago I was born in Mannheim, Germany.