How to Use "doughnut" with Example Sentences

1. I could never have a doughnut today !
2. I thought I was never going to ace the test unless I had a doughnut from the store around the corner .
3. To mathematicians , a chair is equivalent to an apple ; a mug-at least , one with a handle-is like a doughnut .
4. How many times have you seen someone hurrying down the street with a blackberry in one hand and a sugary coffee or doughnut in the other ?
5. In a few seconds she will be screeching around vicious corners at speeds that send up smoke from the tires , performing " doughnut " spins and hand-brake turns .