In the days when an ice cream cost much less, Tom, 31      8-year-old boy, entered a hotel coffee shop    32    sat at a table. A waitress put a glass of water in front of him. “How much is an ice cream?” “Fifty-cents,” replied the waitress .The little boy pulled 33     right hand out of the pocket and studied a number of    34    in it. “How much is a dish of plain ice cream?” he asked. Some people were now waiting for her service and the waitress grew a bit   35    (patience). “Thirty-five cents,” she said 36      (rude). The little boy carefully counted the coins   37    . “I will have a plain ice cream,” he said. The waitress walked   38    . The boy finished the ice cream, paid the cashier and left. It was not long   39     the waitress came back and then she began to wipe down the table and suddenly was surprise at what she saw. There,   40     (place) neatly beside the empty dish, were two nickels and five pennies — her tip!