one was
Tom non si stava lamentando.
Tom wasn’t complaining.
Si stava preparando per andare al lavoro.
He was getting ready to go to work.
Tom si stava comportando male.
Tom was misbehaving.
He was fooling himself.
Sami era dall'altra parte del mondo e si stava preparando all'arrivo di Layla.
Sami was on the other side of the world, preparing for Layla’s arrival.
Si stava preparando per un esame.
He was preparing for an exam.
Ma la salute di Shanta si stava indebolendo,.
But Shanta’s health was deteriorating.
— Una luce dal passato (2004)
Tom si stava lamentando per un dolore alla schiena.
Tom was complaining of back pain.