There was less food for birds and also for the Prairie dog, an holes in the ground.
A. livs
B. is living
C. living
D. lived
网友回答
A. livs
B. is living
(答案→)C. living
D. lived
解析：本题是定语从句的省略。An animal which lived in the holes中可以省略which，将动词转换为一ing形式直接作定语。