How to use "behaviour" in a sentence

That's why you also gave me small amounts of poison.' Mr Slinkton was surprised by Beckwith's behaviour

The girl could not understand his behaviour at all, and looked at him with a puzzled expression.

'Tell me about it,' he said to Marius, who stared back with silent amazement, unaware that the word 'grandfather' was responsible for the change in the old man's behaviour

Only once was Helene's behaviour so wild and uncontrollable that the doctor had to give her a powerful drug to calm her down

Hawes was nervous and his behaviour strange

'But when they did come out, their behaviour was happy and normal

I have already described the behaviour of the people to whom I spoke

At first I could see no reason for his behaviour