On a trip to California，my family stopped for lunch.As we walked toward the entrance to the restaurant，a man，with a__1__beard and dirty hair，jumped up from a bench outside the restaurant and opened the door for us.Regardless of his__2__，he greeted us in a friendly way. 

Once inside，my daughters whispered，“Mom，he __3__.”After we ordered our lunch，I explained，telling the kids to look__4__the dirt.We then watched other customers approach the restaurant but many__5__him.Seeing this rudeness truly upset me.The day I became a mother，I had determined to set a good__6__to my children.Yet sometimes when things didn’t go right，being a good example was __7__.When our meal arrived，I realized I had left the car-sick pills in the truck.With the windiest trip ahead，the kids needed them，so I__8__myself from the meal and went to get them. 

Just then，the “doorman” was opening the door for a couple.They rushed past him without even acknowledging his__9__.Letting them in first，I said a loud “thank you” to him as I__10__. 

When I returned，we talked a bit.He said he was not allowed inside__11__he purchased food.I went back and told my family his__12__.Then I asked our waitress to add one soup and sandwich.The kids looked__13__as we had already eaten，but when I said the order was for the “doorman”，they smiled.When it was time to__14__ our trip，I found the “doorman” enjoying his meal.Upon seeing me，he stood up and thanked me heartily.He then__15__ out his hand for a handshake and I gratefully accepted.I suddenly__16__the tears in his eyes—tears of gratitude (感激).What happened next drew great astonishment：I gave the “doorman” a__17__.He pulled away，with tears__18__down his face. 

Back in truck，I fell into deep thought.While we can’t choose many things in life，we can choose when to show gratitude.I said thanks to a man who had__19__held open a door for me，and also said thanks for that __20__ to teach my children by example.

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