Studies show that office workers are more ______to suffer from backache because they always sit before computer screens for long hours.                                   

Studies show that office workers are more ______to suffer from backache because they always sit before computer screens for long hours.

1. A.
   surely
2. B.
   likely
3. C.
   probable
4. D.
   possible

 Studies show that office workers are more ______to suffer from backache because they always sit before computer screens for long hours.                                   

A. surely          B. likely           C. probable          D. possible 

Studies show that office workers are more ______to suffer from backache because they always sit before computer screens for long hours.                                   

A. surely          B. likely           C. probable          D. possible 

Studies show that office workers are more ______to suffer from backache because they always sit before computer screens for long hours.