How to use "feed" in a sentence

'That nasty little girl, who isn't even my own daughter, who I feed and look after out of the kindness of my heart, has been playing with my daughters' doll.'

Again, she tried to feed in her questions

Tina stooped beside the wall outlet from which the computer received its electrical power and its data feed

I'd better have a look at it, check the fittings, the incoming feed, all that."

It was the only occasion on which I actually saw the Martians feed

This meant that women had to go out to work because they needed to feed their children.