完形填空。
Tom and his father are 1 in the playground. There is a cat and a dog there. They are playing with a ball together. “I think the cat is 2 than the dog," Tom says, “I don't think so," his father says. “Why?" “Because the dog looks 3 than the cat " Tom laughs and says, "But I like the cat. It is white and it is 4 than the dog. " Tom's father says, “Dogs are my favourite animals because they are very 5 to me " "Yes, but I like smaller ones. Can we keep one?" Tom says. "of course," Tom's father says.
