278.You must fire __________ incompetent assistant of yours.

　 the

　 that

　 whichever

正确答案：C

解析：

解析:考查双重属格所修饰名词的限定词。双重属格所修饰的名词可以跟 this,that 等指示代词连用,表示爱憎贬褒等感情色彩。本题中 fire 和 incompetent 表达了憎恨的情感, 故选 that。句意:你必须解雇你那位不称职的助手。

25.John is________hardworking than his sister, but he failed in the exam.

24.I felt that I was not yet( )_ to travel abroad.

23.I was to have made a speech if( )

22.I have never been to London, but that is the city( )

21.It was as a physician that he represented himself, and ( )_ he was warmly received.

20.Come and see me whenever( )

19.The team can handle whatever( )

18.( ), he is ready to accept suggestions from different sources.

17.The physicist has made a discovery, ( )of great importance to the progress of science and technology.

16.Mr. White works with a chemicals import & export company, but he( )for this industrial fair, since he is on leave.