A

    On a very sunny afternoon this summer, Laura was driving home. When she was near a crossing, Laura found one of the traffic lights didn't work. And a policeman was standing in the middle of the crossing. There were too many cars. And the weather was too hot. The fact was that he was doing a hard job. He was busying directing(指挥) traffic.

    Laura saw a store on the corner. She wanted to buy some water for the policeman. But it was a little shy of her to do it for a stranger. At last Laura decided to go to the store to buy some water. After buying water, she found it was not easy to give the water to the policeman in the busy crossing.

    But Laura still wanted to have a try. She drove into the crossing and gave him the water. Though he was too busy to take the water, he broke into a smile and said, "Thank you."

    Laura went home by car and felt better. It felt good to spread the positive energy(正能量), and it was the least she could do.

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