51.How are you／you 【解析】根据回答“I'm fine，too．”可知上文Jack应该问“you／How are you”。 

52.I'm／My name is Jack Smith 【解析】上文Peter作了自我介绍，所以接下来是Jack介绍自己，应填“I’m/My nanle is Jack Smith”。

53.Yes 【解析】Peter问“Is this your first day here in this school?”即：“这是你到校的第一天吗?”又由汉语提示可知Jack是第一天到校，应回答“Yes”。 

54.I think it’S a great place／Oh．it's a wonderful plaee／I like it very much 【解析】Peter问Jack“是否喜欢这所学校”，由汉语提示可知Jack觉得这地方不错，故应填“I think it's a great place／Oh，it's a wonderful place／I like it very

55.Oh，that’s good 【解析】Jack同意和Peter去见他的朋友，因此填“Oh，that’sgood”