They have no idea at all.A. where he has goneB. where did he goC. which place he has goneD

问题补充：

They have no idea at all.

A. where he has gone

B. where did he go

C. which place he has gone

D. where has he gone

答案：

(答案→)A. where he has gone

B. where did he go

C. which place he has gone

D. where has he gone

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