Direction: Sentences are given with blanks to be filled in with an appropriate and suitable word. Four alternatives are suggested for each question. Choose the correct alternative out of the four.
- 
					 Only one of the boys ......not done the home-work given yesterday.
 
- 
                        
-  have 
 -  has
 -  can 
 - could
 
 -  have 
 
Correct Option: B
On ly one of the boys (Subject) is Singular. It will agree with a Singular Verb. So, has will be used
Here, has is the right usage.