完形填空二。（共8小题；每小题1.5分，满分12分）
仔细阅读下面短文并按照语境完成填空（每空只能填一个单词），注意语法、词性、词形变化等。将答案填写在答题卡上。
I’ve a friend who has a big police dog 78._______Jack. Every Sunday afternoon my friend takes Jack 79.________ a long walk in the park. He likes these walks in the park very much. One Sunday a young man dropped 80.________ on my friend. He stayed a long time. They talked and talked. Soon 81._________ was time for my friend to take Jack for his walk, 82.________ the visitor still sat talking. Jack became worried 83.________ his walk in the park. He walked round the room several times and then he sat right in front of the visitor and looked at him. But the visitor paid 84._________ attention. He continued talking. Finally Jack could stand it no 85._________. He held the visitor’s hat in his mouth and ran out of the house.