试题题干
Fill in the blanks with the words given in brackets. Make changes or add something where necessary.
The project
(which) they have been working for two years is a total failure.
参考答案
试题解析
由题干可知句子的主干是The project is a total failure. 所以the project后面是定语从句来修饰the project。又由work on sth 可知空格处需用介词on+which。句意：他们两年前一直在做的项目是一大败笔。