Go on edu birdie the help good this is just for ur opinion on it
To prevent from succeeding.
During is a preposition
that is a determiner
epidemic is a noun
early is an adjective
warnings is a noun
circulated is a verb
widely is an adverb.
The underlined term (flies) used verb+es which is used to describe the verb that still being doned regularly.
If the verb is currently being done , the verb will use-ing , if it's a plan in the future, we will see 'will' before the verb and the verb will not use -es
hope this helps