All that can be done .A. has been doneB. has doneC. have doneD. were done

问题补充：

All that can be done .

A. has been done

B. has done

C. have done

D. were done

答案：

(答案→)A. has been done

B. has done

C. have done

D. were done

解析：可联系答.案.网客服索取。