11.   Also dropped was an electrical engineer who said mistakes can happen in any science and indicated that Simpson would have fled if he were guilty.

12.   But mistakes happen.

13.   Despite the precautions, Evans said recently, he constantly worries that a mistake will happen.

14.   How did such an inexplicable mistake happen?

15.   How can such mistakes happen at such a pivotal point of the season?

16.   How could such a deadly mistake happen?

17.   If we do and he does have a problem or a mistake happens to him, then we have an opportunity.

18.   In each case, NATO officials sent regrets, noted that mistakes will happen, and added that the mistakes to date have been remarkably few.

19.   Make criticism constructive, and give it as soon as possible after the mistake happens.

20.   Mistakes can happen with animal species, too.