问题补充:
—The former president of Iraq was caught at last.
—Really? Where himself?
A. has he hidden
B. had he hidden
C. was he hidden
D. has he been hidden
答案:
A. has he hidden
(答案→)B. had he hidden
C. was he hidden
D. has he been hidden
解析:hide动作发生在caught之前,故用过去完成时。B项为最佳答案。