When i talked with my friends, i used "really?!"a lot.
Is there any other expression of surprise with positive or negative image?
Let me see.
I should have said like...
Is that true?！
DAMN! That's AMAZING DUDE!
I mean adverbs rather. "Exactly" etc.
"Great, amazing, incredible"! You may want to spice up your conversations using adjectives.
awesome, fantastic, absolutely right, nothing better than this, cannot agree with you more, Surely, certainly, indeed, ......etc.