单选题   There was a teapot fashioned like a china duck, out of ______ open mouth the tea was supposed to come.
 
【正确答案】 D
【答案解析】该题考查定语从句中关系代词的用法，teapot为先行词，mouth和teapot应该是从属关系，所以用表示从属关系的代词whose指代teapot，构成非限制性定语从句。