Well, just about anything, actually. Most of his lines if not all of them are in response to something.
Quite a lot really. Just about everything Mercutio says in Act I Scene IV is in response to Romeo's "heaviness".
"Then I defy you, stars!" He immediately makes plans to go to Verona even at peril of his life.
Romeo said "thou art not conquered" in response to Juliet's concern that they were no longer in control of their fate. He reassured her that their love was still powerful and unconquered by the obstacles they faced.
Romeo
She does not see Romeo at first. She feels him hold her hand and hears his voice before she sees him. Her response is to his voice, not his appearance.
A lot.
She means "Where are you, Romeo?"
they say a lot of things but the most of the all of is that Romeo likes juliet
ummm romeo and juliet? idiot..
He banishes Romeo from Verona, stating that if Romeo was found inside Verona 'that hour shall be his last'
Are you trying to say "Wherefore art thou Romeo?", Juliet's famous line from Romeo and Juliet? It means "Why are you Romeo?"
Romeo in Italian is Romeo. It's actually an Italian name. It means "Pilgrim to Rome".