How to use "acting" in a sentence

So we went with Mr Felder, and I found myself acting in a film about the jungle - with Raquel Welch, the famous film star! 'Is that really Raquel Welch?' I asked Mr Felder

'I'm happy to leave the dangerous acting to Bud.'

He's been acting like an ass lately, but he'll get over it

The gasp drew the deadly mist up his nose, where the active poison - a particularly fast-acting neurotoxin - was instantaneously absorbed through the sinus membranes

She's got a very definite idea in her head and she's acting upon it.'