问题补充：
Hardly when the flood peak arrived.
A. they had left their village
B. they left their village
C. did they leave their village
D. had they left their village
答案：
A. they had left their village
B. they left their village
C. did they leave their village
(答案→)D. had they left their village
解析：
否定副词hardly放于句首构成倒装句。句意为：他们刚离开他们的村庄，洪峰就来到了。
