洪水过后，水位花了数周才下降。

After the ___flood, it took weeks for the water level to go down.

大雨导致该地区发生多起洪水。

The heavy rain caused many ___floods in the region.

暴风雨后，突如其来的洪水淹没了街道。

A sudden ___flood covered the streets after the storm.