How to use "opera" in a sentence

Sentences

After that, I thought about Walter often, especially on the nights when Percival left me alone and went to parties with the people from the opera house.'

One evening he got into a cab and told the driver to go to the opera house

I took a cab to my friend Pesca's house and asked him to come to the opera with me

At the opera, I asked Pesca, 'Do you recognise that fat man over there?'

The man you saw at the opera is a member of the Brotherhood and has betrayed the cause

As I walked up to the Count's door, I noticed the blond man with the scar on his face from the opera