Dipsik“Could you please explain to me why you didn´t correct the indefinite article before the word kids (second paragraph, first line)?”
You are right the 'a' before 'kids' should not be there. I missed out. Thank you. The original poster, please note.
Dipsik“I would also write seriously, instead of the word "serious" you used (the latter is only used in informal English - at least as far as I know...)”
The part in question is
"The streets practically were practically flooded but not serious enough to cause a total flooding or some any tragedy" and you have a point here as 'seriously' will be another adverb modifying the verb 'were flooded' but I used the adjective there to be illiptical for 'the floods were not serious enough' to be natural.