________ can be done ________ done. [ ]
问题:
________ can be done ________ done. [ ]
A. All; have been
B. All that; have been
C. All; has
D. All that; has been
________ can be done ________ done. [ ]
A. All; have been
B. All that; have been
C. All; has
D. All that; has been