Do you know ?A. when will he be back B. when he will be back C. where did he goD. where wi

问题补充：

Do you know ?

A. when will he be back

B. when he will be back

C. where did he go

D. where will he go

答案：

A. when will he be back

(答案→)B. when he will be back

C. where did he go

D. where will he go

解析：本题know后面跟的是一个宾语从句，要用正常的陈述顺序，故不选ACD,只能选B。