试题题干
Fill in the blanks with an item as required.
With an appropriate relative pronoun or relative adverb:
The teapot was fashioned like a duck, out of 
open mouth the tea was supposed to come.
参考答案
试题解析
relative pronoun or relative adverb指关系代词或关系副词。whose指某人的，由题干可知本句是一个非限制性定语从句，而且先行词是the teapot，open mouth前面缺少的是形容词性物主代词whose。