问题补充:
All parents are willing to risk their lives to save of their children when a disaster is approaching.
A. losing; that
B. to lose; those
C. losing; those
D. having lost; the ones
答案:
A. losing; that
B. to lose; those
(答案→)C. losing; those
D. having lost; the ones
解析:可联系答.案.网客服索取。