请选择DCBA,B+R0o.Z Could you tell me _________ the radio without any help?)b8e;S2K2U-W/Z
A. how did he mend)b8e;S2K2U-W/Z
B. what did he mend)b8e;S2K2U-W/Z
C. how he mended)b8e;S2K2U-W/Z
D. what he mended)b8e;S2K2U-W/Z