for several weeks, the city was short of food and clothing.
A. As having flooded
B. As flooding
C. Having been flooded
D. To flood
网友回答
A. As having flooded
B. As flooding
(答案→)C. Having been flooded
D. To flood
解析：考查现在分词的完成式做状语，句意：被洪水淹没了几个星期后，这个城市缺乏食物和水。说明是先被洪水淹没，然后才缺食物和衣物的。选C。