It rained heavily in the south, serious flooding in several provinces.
A. caused
B. having caused
C. causing
D. to cause.
网友回答
A. caused
B. having caused
(答案→)C. causing
D. to cause.
解析：考查非谓语动词。句意：南方下了大雨，在几个省区造成严重洪灾。空格后serious flooding是rained heavily的后果，而且句子主语it和cause之间存在主动关系，所以此处要用动词的ing形式作结果状语。选C。