请选择DCBA;~8H/o)j-M-B,r(f;L1T:C,O;}From his ________ voice on the phone, I know everything is going under way.(A'q0n9K3?)W
A. satisfactory(A'q0n9K3?)W
B. satisfying(A'q0n9K3?)W
C. satisfied(A'q0n9K3?)W
D. satisfaction(A'q0n9K3?)W