Present Perfect, Present Perfect Continuous, etc. Corrections and explanations, please)
I’m not surprised he has failed that exam. He has not been working hard recently.
Does Perfect Continuous emphasize duration here? What sounds natural to YOU?
ps I know that PrP & PrPC can be used interchangeably with verbs like live, work, etc. But authors of tests like this have something in mind. I'd like to read their thoughts to be able to explain things to guys preparing for such tests)