A housewife went into a store. She wanted to buy some fish f______ dinner. When she finished her s___________, she went to the counter. There were two other people b__________ her. Suddenly, the woman burst out a scream（尖叫）. One of the two people behind her seemed to be f____________ and ran out of the s________. A policeman happened to pass by. He stopped the young man and took him by the arm because the young man was holding a gun! The young man turned out a robber. He wanted to rob the store o____________. Later, the grateful store owner asked the h__________, “You are really brave and clever. Would you please t_________ me how you found out the man behind you a robber?” “No, I didn’t know he was a robber.” The housewife answered. “I s__________ because I thought the price of the fish in your store was much t_________ high.