Final answer:
People use various items like fly swatters, newspapers, hands, or towels to swat flies.
Step-by-step explanation:
To swat a fly, people commonly use a fly swatter, a newspaper, their hand, or a towel. These items are used to quickly hit the fly and knock it away or kill it. For example, a fly swatter is a handheld tool with a flat surface that is specifically designed for swatting flies.