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had been producing

  • past perfect progressive
    of produce.
    produce
    verb (used with object)
    to bring into existence; give rise to; cause.

Example Sentences

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Gowen's investigation into Monsanto - which had factories in Newport and Wrexham - found it had been producing what he had called "some of the worst contaminants known to man" in the 1960s and '70s.

From BBC Sep. 10, 2026

Under Mattoni’s protocols, the butterflies had been producing about 200 pupae each year, Johnson said.

From Los Angeles Times May 25, 2023

I had this script, called "Story of a Girl," and I'd been trying to make it for 10 years as a producer because for some reason I had been producing since I'm 25.

From Salon Apr. 14, 2023

In stepped Hannah Breton of Naugatuck, Connecticut, who had been producing more milk than her 2 1/2-month-old son needs.

From Seattle Times May 13, 2022

He began to recall with new tolerance the insane antics of people he had been producing shows about.

From Operation: Outer Space by Murray Leinster