题目内容：

The heavy rain lasted a couple of days,( ) more than two-thirds of the ol...
The heavy rain lasted a couple of days,( ) more than two-thirds of the old town.A.flooded B.flooding C.to flood D.having flooded

优质解答

选having flooded ,用动词加ing做分词结构,主语是rain当然是用主动语态,用完成时having flooded是强调过去发生的事对现在的影响.
大雨持续好些天,淹没了三分之二的镇子.