第二节：语法填空 In the days when an ice cream cost much less, Tom, __11______ 8-year-old boy, entered a hotel coffee shop _12_____ 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 _13_____ right hand out of the pocket and studied a number of ___14___ 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 __15_____ (patience). 'Thirty-five cents,' she said _16_____ (rude). The little boy carefully counted the coins _17_____. 'I will have a plain ice cream,' he said. The waitress walked _18______. The boy finished the ice cream, paid the cashier and left. It was not long _19_____ the waitress came back and then she began to wipe down the table and suddenly was surprised at what she saw. There, _20_____ (place) neatly beside the empty dish, were two nickels and five pennies --- her tip!