People often say that a dog is man's best friend. Over thousands of years, man has taught his dogs to do many kinds of work besides guarding the home. For example, sheepdogs are famous for their ability to control a flock of hundreds of sheep.
Dogs have been used to aid disabled people for centuries. A guide dog can lead its blind owner. Nowadays, dogs can be taught to turn on light switches, open refrigerator doors and dial the telephone for their disabled owners. For the majority of people, however, dogs are simply pets and friends for both young and old members of the family.
2. Detective Work
A bank robber stole a lot of money. He was caught and sent to prison, but the money was never found. When he came out of prison, they watched him to see what he would do. Here is the detective, reporting to the inspector. "Yes, sir, I found Johnny. I followed him all around the town, but frankly, I couldn't make anything out of what he bought. Here's the list."
Shirt, heavy crowbar, box of chocolates, shovel, heavy hammer, bunch of flowers .The inspector said, "Good. That helps me a lot. Do you remember how we watched him helping his neighbor, old Mrs. Judson to cover her backyard with cement?