请听一段录音,根据内容完成信息卡,内容读两遍。 The writer thinks a dog is the most 1 and faithful animal in the world. The people keeping dogs as pets used to keep dogs in order to keep 2 ; now keep them as 3 ; for a child, a dog is his playmate, for old couples, a dog is their 4 . Now you can understand why so 5 people like keeping dogs.