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 he has gone
答案:
(答案→)A. where he has gone
B. where did he go
C. which place he has gone
D. where he has gone
解析:主要测试同位语从句。参看上文。译文:他根本不知道他走向何方。