问题补充：
A Nepal plane crashed in bad weather, all 18 on board.
A. killing
B. killed
C. having killed
D. to kill
答案：
(答案→)A. killing
B. killed
C. having killed
D. to kill
解析：句意：一架尼泊尔的飞机在恶劣的天气中坠毁，机上的18人全部遇难。动作“kill”与其逻辑主语“A Nepal plane”是主动关系，故用现在分词作结果状语，选A。
