补全对话 Peter:Hi, Sally. Come and have a look at my photos. Sally:Are these the photos you took in Africa, Peter? Peter: 1 Look, this is a wildebeest. It's an animal in Africa. Sally: 2 Peter:No, it doesn't. It only eats grass. Sally:Are there a lot of animals in Africa? Peter: 3 Sally:Oh, this photo looks interesting. What are you doing there? Peter: 4 Sally:Did you have a good time there? Peter:Ofcourse. 5