understood everything
Haben Sie alles verstanden, was Tom gesagt hat?
Did you understand everything Tom said?
Du brauchst nichts zu sagen, ich habe alles verstanden.
You don't need to say anything; I understood everything.
Ich habe fast alles verstanden!
I understood almost everything!
Did everyone understand everything?
Danke, ich habe alles verstanden.
Thank you, I understand everything.