It took a great deal of courage to admit that all his efforts had been ____.

1. A.
   in vain
2. B.
   in turn
3. C.
   in return
4. D.
   in danger

 It took a great deal of courage to admit that all his efforts had been ____.

A. in vain                  B. in turn                  C. in return                D. in danger

It took a great deal of courage to admit that all his efforts had been ____.

A. in vain               B. in turn          C. in return         D. in danger