The ice palaces are built during the québec winter carnival true*** or false

The play performance was going extremely well, and the audience's acclaim proved this. the cast members bowed and basked in the endless applause. there wasn't one person sitting in their seats. the play had been a great success! acclaim means

Explain what has to happen when you use être instead of avoir for the formation of the passé composé? il an english explanation with steps if possible

Can anyone me with those 3 questions? you