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had been researching

  • past perfect progressive
    of research.
    research
    noun
    diligent and systematic inquiry or investigation into a subject in order to discover or revise facts, theories, applications, etc..

Example Sentences

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See Examples For:

“He was so excited,” Sharkody said, and had been researching how to set up a college fund for his niece before his death.

From Seattle Times Jan. 24, 2024

Meanwhile, in Rome, Italian neurologist Ugo Cerletti had been researching epilepsy by electrically inducing seizures in dogs.

From Salon Sep. 4, 2023

Walker was an avid hiker and had been researching lost water features and trails, according to Domenica Megerdichian, the South Pasadena deputy city manager.

From Los Angeles Times Jul. 27, 2023

Derek Sharples, who later served as a commander with the Royal Navy Reserves, said his family had been researching the Savernake explosion since 2001.

From BBC Apr. 23, 2023

Jamie glanced at the newspapers I had been researching.

From "From the Mixed-Up Files of Mrs. Basil E. Frankweiler" by E.L. Konigsburg