All that can be done ____.

        A.has been done     B.have been done   C.have done     D.has done

All ___ can be done has been done.

A. what    B. that    C. which      D. the one

 All that can be done _______.

    A. has been done    B. has done         C. have done           D. were done

All that can be done __________

1. A.
   has been done
2. B.
   have been done
3. C.
   have done
4. D.
   has done

 All __________ can be done has been done.

A. which             B. that               C. /               D. what