问题
选择题
The killer insisted that she was defending herself when _______.
A．attack
B．attacked
C．to attack
D．having attacked
答案
答案：B
题目分析：考查非谓语。句意：杀人者坚持说当他被袭击的时候他是正当防卫。When是连词，连词后要么+ doing，表主动关系，要么+ done，表被动关系，本题中主语she 和attack袭击之间是被动关系，所以B正确。