15.We can buy clothes the most cheaply in Jason's,
问题描述：
15.We can buy clothes the most cheaply in Jason's,
答
in 是介词,表示 在……里
in Jason's =in Jason's shop 在 Jason 的店里The prize for the best performer went to Verafor呢这里的 for 用于名词后表示 接受者 。最后一个问题更有教育意义 be more educational毫无意义 be meaningless为什么加be因为 educational 和 meaningless 都是形容词，形容词前需要加 be 动词。