试题题干
Fill in the blanks with an item as required.
With an appropriate relative pronoun or relative adverb:
The business of the company has reached a point 
a change is needed.
参考答案
试题解析
relative pronoun or relative adverb指关系代词或关系副词。where指地点，本题题干是一个含有定语从句的复合句，这里缺少一个表示地点的关系副词。