As the boy listened attentively in class, everything his teacher said was easily______.

1. A.
   for him to understand
2. B.
   understood
3. C.
   to understand
4. D.
   to be understood

As the boy listened attentively in class, everything his teacher said was easily______.

   A. for him to understand   B. understood   C. to understand   D. to be understood 

As the boy listened attentively in class, everything his teacher said was easily______.