As we drew closer, I could see a whale by a pack of about six other killers.
A. attacked
B. to be attacked
C. having been attacked
D. being attacked
网友回答
A. attacked
B. to be attacked
C. having been attacked
(答案→)D. being attacked
解析：非谓语动词充当补足语。Whale与attack构成被动关系，根据句意可知又是正在进行。句意：当我们靠近时，我看见一跳鲸鱼正在被大约6条杀人鲨攻击。