A group of travelers were having dinner in a restaurant. W（ 1 ）they were eating fish, they began to tell stories about finding expensive stones inside fish. At last, an old man said, “Now I’m going to tell you a t（ 2 ） story of my own. When I was young, I worked in a large company in London. I fell in l（ 3 ） with a pretty girl. Two months before our marriage（婚礼）, I was s（ 4 ） sent to Edinburgh on business. My stay was a bit longer than I expected（预期）. At last, my work was done and I left for home. Before I left Edinburgh, I bought a nice diamond ring for my sweetheart. On my way to London, I learned about my sweetheart’s getting married to another man from a newspaper. I was so sad that I t（ 5 ） the diamond ring into the river. A few days later, when I was eating fish, I bit on something very hard. What do you think it was?” “The diamond ring,” shouted his friends. “No, ” said the old man sadly, “It was a fish b（ 6 ）.”