设函数 $f\left(x\right)=\{\begin{array}{c}{e}^x-a\left(x<1\right)\\ \ln \left(x+a\right)\left(x\ge 1\right)\end{array}$ 其中a＞﹣1．

完形填空

    Mr. Smith lived in a big city. When he retired(退休), he bought a small 1in a village near the sea. He2it and hoped to live a quiet life in this house.

    But to his great surprise, many visitors came to see his house in summer holidays, for it was the most 3building in the village. From morning to night there were 4outside the house. They kept looking 5the rooms through the windows and many of them even went into Mr. Smith's garden. This was too much for Mr. Smith. He decided to ask the visitors to 6. So he put a notice (告示) on the window. The notice said, “If you want7it, come in and look round. Price: twenty dollars.” Mr. Smith was sure that the visitors could8coming, but he was wrong. More and more visitors came and Mr. Smith had to 9every day taking them around his house.“I came here to 10not to work as a guide,” he said angrily. In the end, he sold the house and moved away.

    It was Mother's Day and I was shopping at the local supermarket with my five-year-old son,Tenyson.As we were1,we realized that only minutes earlier an2woman had fallen over at the entrance and hit her head on the ground3was with her, but there was blood everywhere and the woman was embarrassed and clearly in shock4,a lot of people stopped to help out.5we were walking towards the scene, Tenyson became very6about what had happened to the elderly couple. He7to me,“Mom, it's not much fun falling over in front of8”Seeing that there was a flower stall(摊位)at the front of the supermarket, he added, “Why shouldn't we9the lady a flower? It will make her feel better.”I was10that he'd come up with this11idea. So we went over and told the flower seller12we wanted.“Just take it,”she replied.“I13take your money for such a wonderful14”

    By now medical staff had arrived, and were15the injured woman. We gave the flower to the woman's husband and I told him it was16my son. At that, the old man started crying and said,“Thank you very much.”He then turned to me,“You have a17son. Happy Mother's Day to you.”

    The man bent down and gave his wife the flower, telling her who it was from18being badly hurt,the old lady looked up at Tenyson with19in her eyes and gave him a little20