It's "bei(m)", "um" or "auf", depending on the context, but if you mean the @ sign, we also say "at" in German with the English pronunciation.
Examples:
He threw the ball at me. - Er hat den Ball auf mich geworfen.
We'll meet at 6. - Wir treffen uns um 6.
I'm at the butcher's. - Ich bin beimMetzger.
I'm at work. - Ich bin auf der Arbeit.
Chre is not a German word
"mit" is the German word for "with".
The German word for their is "Ihre."
The word FROM in German is von
The German word for he is er.
The word for is in German - " ist "
The German word for "Who" is "Wer".
The German word for when is wenn.
German is not a compound word.
The word for platypus in German is "Schnabeltier".
No, "danka" is not a German word. The correct German word is "danke". "Danke" is the German word for "thank you".
The German word for German is Deutsch (sounding like "doitch."