Persist to the end , _______ you are the only one left.
| 
   A.even if /though  | 
  
   B.but  | 
  
   C.however  | 
  
   D.in spite of  | 
 
We’ll carry the work through , cost _______ it may .
| 
   A.what  | 
  
   B.when  | 
  
   C.where  | 
  
   D.how  | 
 
_______ you have got used to it , you’ll like it .
| 
   A.While  | 
  
   B.On the condition  | 
  
   C.Once  | 
  
   D.Unless  | 
 
I paid only 5 pounds for the book , _______I expected it would cost.
| 
   A.not as many as  | 
  
   B.not so much as  | 
 
| 
   C.cheaper than  | 
  
   D.not so expensive  | 
 
_______I know , the computer can never take the place of the human brain.
| 
   A.As for  | 
  
   B.As long as  | 
  
   C.So far for  | 
  
   D.So /As far as  | 
 
______ did it , I didn’t.
| 
   A.Who  | 
  
   B.Whoever  | 
  
   C.No matter whom  | 
  
   D.No matter when  | 
 
