"Requesting" is a verb there. It is in the continuous form because the process continued over time.
Student or Learner
I was skeptical about doing it, but production house kept requesting me, as many actors turned it down.
I want to understand that request is a verb or adverb and why did we used present participle here? Please clarify
Is there any specific rule of using present participle? Why did we use requesting in the above sentence?